PIP cases

A searchable listing of CAP (College of American Pathologists) PIP (Performance Improvement in Pathology) cases
This page is not affiliated with the CAP

Currently includes 2007 (case 1) through 2021 (case 10)


DIAGNOSISYEARNUMBERSITE
Myxoid liposarcoma20071Soft tissue
Malignant solitary fibrous tumor20072Chest wall
Submassive hepatic necrosis20073Liver
Hepatoblastoma20074Liver
Melanoma20075Anus
Congenital mesoblastic nephroma, cellular type20076Kidney
Carcinoid tumor20077Kidney
Gliomatosis cerebri, WHO grade 320078Brain
Angiosarcoma20079Spleen
Hepatosplenic T-cell lymphoma200710Spleen
Paraganglioma of the cauda equina200711Spinal cord
Spindle cell lipoma200712Soft tissue
Endometrial stromal sarcoma, low grade200713Uterus
Angiolipoma200714Kidney
Extraskeletal Ewing sarcoma/primitive neuroectodermal tumor200715Buttock
Seminoma200716Testis
Epithelioid leiomyosarcoma200717Uterus
Acute cellular allograft rejection (Banff 97, grade 2B)200718Kidney
Cardiac myxoma200719Heart
Osteosarcoma200720Bone
Aggressive angiomyxoma200721Scrotum
Metastatic renal cell carcinoma200722Colon
Pulmonary cryptococcosis200723Lung
Mucinous cystic neoplasm (mucinous cystadenoma)200724Pancreas
Malignant mixed mullerian tumor200725Right ovary
Neuroblastoma, poorly differentiated200726Adrenal gland
Metanephric adenoma200727Kidney
Alveolar soft part sarcoma200728Paraspinal soft tissue
Clear cell carcinoma of ovary200729Ovary
Sarcomatoid carcinoma (metaplastic carcinoma)200730Breast
Atypical meningioma (WHO grade 2)200731Brain
Fibrolamellar hepatocellular carcinoma200732Liver
Follicular dendritic cell tumor/sarcoma200733Mediastinum
Splenic marginal zone lymphoma200734Spleen
Post-radiation osteosarcoma, fibroblastic type200735Skull
Low grade papillary urothelial carcinoma200736Kidney
Hepatoid carcinoma200737Ovary
Embryonal rhabdomyosarcoma (ERMS) with anaplasia200738Suprapubic region
Plasmacytoma, extramedullary200739Soft tissue, left posterior neck and shoulder
Pancreatic endocrine carcinoma200740Pancreas
Cytomegalovirus pneumonia and pneumocystis pneumonia20081Lung
Aggressive systemic mastocytosis20082Liver
Angiofollicular hyperplasia (Castleman disease)20083Lymph node, Mediastinum
Metastatic melanoma20084Soft tissue, abdomen
Small cell carcinoma20085Lung
Adenocarcinoma of the small bowel, arising in celiac disease20086Small bowel
Microcystic serous cystadenocarcinoma20087Pancreas
Undifferentiated (anaplastic)carcinoma of thyroid20088Thyroid gland
Pulmonary adenocarcinoma, mixed subtype20089Left lung
Crohn disease200810Rectum and sigmoid colon
Pituitary adenoma200811Central nervous system
Extranodal marginal zone lymphoma, MALT type200812Lung
Chordoid meningioma200813Right parietal brain
Adrenal cortical carcinoma200814Adrenal gland
Juvenile granulosa cell tumor200815Ovary
Angiomyofibroblastoma-like tumor of the male genital tract (cellular angiofibroma)200816Soft tissue mass, scrotal
Malignant mesothelioma200817Peritoneum
Lymphoepithelial thymoma200818Thymus
Focal nodular hyperplasia200819Liver
Desmoid-type fibromatosis200820Mesenteric mass
Lymphangioma200821Spleen
Mucinous carcinoma arising in an intraductal papillary mucinous neoplasm200822Pancreas
Gastrointestinal stromal tumor200823Ileum
Angiosarcoma200824Liver
Metastatic colorectal adenocarcinoma200825Ovary
Acinic cell carcinoma200826Parotid gland
Oncocytoma200827Kidney
Lymphoepithelial cyst200828Pancreas
Paraganglioma200829Mediastinum, posterior
Chondrosarcoma200830Left pelvis
Anaplastic hemangiopericytoma of the nervous system200831Dura/meninges
Hairy cell leukemia200832Spleen
Mammary-type myofibroblastoma of soft tissue200833Scrotum
Angiosarcoma200834Right leg skin
Leydig cell tumor200835Testis
Chromophobe renal cell carcinoma200836Right kidney
Chronic villitis secondary to cytomegalovirus infection200837Placenta
Littoral cell angioma200838Spleen
Cavernous hemangioma200839Liver
Myelolipoma200840Adrenal gland
Nodular melanoma20091Skin
Plasmacytoma20092Jejunum
Herpes simplex virus hepatitis20093Liver
Adenocarcinoma, diffuse (signet ring cell) type20094Stomach
Serous neoplasm of low malignant potential20095Ovary
High grade endometrioid uterine carcinoma, Grade 320096Uterine corpus
Ganglioneuroma20097Soft tissue
Spindle cell thymoma (WHO type A)20098Mediastinum
Leiomyosarcoma20099Left pelvic soft tissue
Papillary renal cell carcinoma200910Kidney
Gliomatosis cerebri200911Central nervous system
Myxoid liposarcoma200912Soft tissue, left medial thigh
Mixed epithelial and stromal tumor200913Kidney
Sclerosing mesenteritis200914Small bowel
Metastatic mucinous adenocarcinoma (mucinous carcinoma peritonei), low grade200915Omentum
Lymphangioma (Lymphatic malformation)200916Small intestine / mesentery
Primary testicular lymphoma, diffuse large B-cell type200917Testis
Malignant phyllodes tumor200918Breast
Endometrial stromal sarcoma, low grade200919Uterus
Clear cell renal cell carcinoma200920Kidney
Hepatocellular carcinoma200921Liver
Acinar cell carcinoma200922Pancreas
Endometrioid adenocarcinoma200923Ovary
Papillary thyroid carcinoma, classical type200924Thyroid
Alpha-1-antitrypsin deficiency200925Liver
Mantle cell lymphoma200926Spleen
Solid pseudopapillary neoplasm200927Pancreas
Angiomyolipoma200928Kidney
Ulcerative colitis200929Terminal ileum and colon
Low grade fibromyxoid sarcoma with giant collagen rosettes200930Mediastinum
Cortical tuber associated with tuberous sclerosis200931Brain
Pseudomembranous colitis secondary to Clostridium difficile infection200932Colon
Squamous cell carcinoma200933Lung
Myeloid sarcoma200934Right ovary
Undifferentiated (anaplastic) thyroid carcinoma200935Thyroid gland
Yolk sac tumor200936Ovary
Complete hydatidiform mole200937Uterus
Schwannoma with degenerative changes200938Retroperitoneum
Non-invasive papillary urothelial carcinoma200939Kidney
Hepatocellular carcinoma200940Liver
Lymphangioleiomyomatosis20101Retroperitoneum
Seminoma20102Testicle
Pneumatosis (cystoides) intestinalis related to progressive systemic sclerosis20103Terminal ileum and colon
Myxoid/round cell liposarcoma20104Colon
Crohn disease20105Colon
Chromophobe renal cell carcinoma20106Kidney
Well-differentiated pancreatic endocrine tumor20107Pancreas
Elastofibroma20108Soft tissue
Steroid cell tumor, not otherwise specified20109Ovary
Renal cell carcinoma with sarcomatoid component201010Left kidney
Cholesterolosis201011Gallbladder
Follicular variant of papillary thyroid carcinoma201012Thyroid
Wilms tumor, favorable histology201013Kidney
Autoimmune (Hashimoto) thyroiditis201014Thyroid
Basaloid squamous cell carcinoma201015Larynx
Myxoma201016Left atrium
Hairy cell leukemia201017Spleen
Adult granulosa cell tumor201018Ovary
Infiltrating duct carcinoma, poorly differentiated201019Left breast
Cavernous hemangioma201020Heart
Dysgerminoma201021Abdominal lymph node
Osteosarcoma, chondroblastic type201022Skull
Invasive lobular carcinoma201023Breast
Endometrioid adenocarcinoma201024Ovary
Chronic villitis secondary to cytomegalovirus infection201025Placenta
Familial adenomatous polyposis201026Gastrointestinal tract
Fibrolamellar carcinoma201027Liver
Medullary carcinoma201028Colon
Angiosarcoma201029Scalp
Adrenal cortical carcinoma201030Pelvis
Congenital hepatic fibrosis201031Liver
Niemann-Pick disease201032Spleen
Tumoral calcinosis201033Left buttock soft tissue
Pseudoangiomatous stromal hyperplasia201034Left breast
Well-differentiated liposarcoma201035Testis/paratesticular
Complete hydatidiform mole201036Products of conception
Nodular sclerosis classical Hodgkin lymphoma201037Lymph node, left axilla
Primary renal Ewing sarcoma/primitive neuroectodermal tumor201038Left kidney
Wilson disease201039Liver
Diffuse large B-cell lymphoma, not otherwise specified201040Spleen
Renal medullary carcinoma20111Right kidney
Carcinoma with thymus-like elements20112Thyroid
Viral associated hemophagocytic syndrome20113Spleen
Intraosseous osteosarcoma, low-grade20114Femur
Glomus tumor20115Shoulder
Splenic marginal zone lymphoma20116Spleen
Multicystic peritoneal mesothelioma20117Peritoneum
Clostridium difficile pseudomembranous colitis20118Colon
Complete hydatidiform mole20119Uterus
Biliary cirrhosis secondary to cystic fibrosis201110Liver
Follicular dendritic cell sarcoma201111Thymus
Mucinous adenocarcinoma201112Colon
Epithelioid trophoblastic tumor201113Uterus
Cryptococcus201114Lung
Recurrent respiratory papillomatosis201115Lung
Congenital mesoblastic nephroma201116Kidney
Glycogen storage disease, type IV201117Liver
Kaposiform hemangioendothelioma201118Soft tissue, right neck
Malignant mesothelioma201119Pleura
Pheochromocytoma201120Adrenal gland
Juvenile granulosa cell tumor201121Ovary
Synovial sarcoma201122Left thigh
Benign Brenner tumor201123Ovary
Chondrosarcoma, well-differentiated201124Bone, third metatarsal, left foot
Malignant peripheral nerve sheath tumor201125Femoral nerve
Kimura lymphadenopathy201126Lymph node/soft tissue
Microcystic serous cystadenoma201127Pancreas
Chordoid meningioma, WHO grade II201128Brain
Mullerian adenosarcoma201129Uterus
Collagenous colitis201130Colon
Angiomyofibroblastoma201131Vulva
Phyllodes tumor, low grade201132Breast
Gaucher disease201133Spleen
Sclerosing stromal tumor201134Ovary
Medullary carcinoma201135Thyroid
Stromal tumor of uncertain malignant potential201136Prostate
Alveolar capillary dysplasia201137Lung
Hepatoblastoma201138Liver
Invasive mucinous adenocarcinoma201139Lung
Dysgerminoma201140Ovary
Gastrointestinal stromal tumor20121Gastric fundus
Mesenteric fibromatosis20122Small bowel mesentery
Infantile fibrosarcoma20123Forearm
Sclerosing mesenteritis20124Mesentery
Ewing sarcoma/Primitive neuroectodermal tumor20125Bone and soft tissue, leg
Alcoholic liver disease with cirrhosis20126Liver
Amyloidosis20127Spleen
PEComa20128Pelvis
Angiomyolipoma20129Kidney
Acinar cell carcinoma201210Pancreas
Neuroblastoma, poorly differentiated201211Adrenal gland
Intramuscular myxoma201212Right chest wall
Urothelial carcinoma201213Urinary bladder
Primary synovial chondromatosis201214Knee
Cellular fibrothecoma201215Ovary
Intra-abdominal desmoplastic small round cell tumor201216Intra-abdominal
Solitary fibrous tumor201217Mediastinum
Hepatitis C with alpha-1-antitrypsin intracytoplasmic globules201218Explant liver
Hepatosplenic T-cell lymphoma201219Spleen
Focal nodular hyperplasia201220Liver
Castleman disease201221Cervical lymph node
Neuroendocrine tumor, WHO grade 2201222Ileum
Alveolar soft part sarcoma201223Soft tissue, thigh
Mesenchymal hamartoma201224Liver
Oncocytoma201225Kidney
Pigmented villonodular synovitis, diffuse type (WHO "diffuse type giant cell tumor")201226Right knee
Burkitt lymphoma201227Small bowel
Endometrial stromal sarcoma201228Uterus
Paraganglioma201229Retroperitoneum
Pancreatic neuroendocrine tumor201230Pancreas
Solid-pseudopapillary neoplasm201231Pancreas
Plexiform neurofibroma201232Small bowel mesentery
Mesenchymal dysplasia201233Placenta
Mantle cell lymphoma201234Spleen
Hibernoma201235Soft tissue, back
Dysgerminoma201236Left ovary
Extranodal marginal zone B-Cell lymphoma201237Lung
Fibrolamellar hepatocellular carcinoma201238Liver
Myelolipoma201239Soft tissue
Angiosarcoma201240Liver
Malignant melanoma, nodular type20131Right plantar foot
Pleomorphic carcinoma20132Lung
Chordoma20133Sacrum
Chondrosarcoma, grade 220134Pelvis
Splenic extramedullary hematopoiesis secondary to primary myelofibrosis20135Spleen
Undifferentiated embryonal sarcoma of liver20136Liver
Metastatic appendiceal goblet cell carcinoid (mixed adenoneuroendocrine carcinoma)20137Pelvis
Chagas disease, acute reactivation following transplant20138Heart
Alveolar rhabdomyosarcoma20139Lymph node and surrounding soft tissue
Chromophobe renal cell carcinoma201310Kidney
Mucinous cystadenocarcinoma of ovary, Grade I201311Ovary
Sclerosing extramedullary hematopoietic tumor201312Retroperitoneum
Urothelial carcinoma, micropapillary variant201313Urinary bladder
Merkel cell carcinoma201314Inguinal lymph node
Pseudomembranous colitis201315Colon
Peutz-Jeghers polyp201316Sigmoid colon
Varicella zoster virus infection201317Placenta
Solitary fibrous tumor201318Mesentery
Immature teratoma201319Ovary
Epithelioid angiosarcoma201320Breast
Extramammary Paget disease201321Vulva
Adenocarcinoma, predominantly acinar type201322Lung
Congenital mesoblastic nephroma201323Kidney
Low-grade fibromyxoid sarcoma201324Thigh
Small lymphocytic lymphoma/chronic lymphocytic leukemia201325Spleen
Uterine leiomyosarcoma201326Uterus
Autosomal dominant polycystic kidney disease201327Kidney
Adrenal cortical carcinoma201328Adrenal gland
Papillary renal cell carcinoma, type 1201329Right kidney
Thymoma, WHO type AB201330Anterior mediastinum
Leiomyoma201331Broad ligament
Nodular lymphocyte-predominant Hodgkin lymphoma201332Mesenteric lymph node
Yolk sac tumor201333Testis
Well-differentiated squamous cell carcinoma201334Mid esophagus
Alagille syndrome201335Liver
Ulcerative colitis201336Ascending colon
Chorangioma201337Placenta
Nodular fasciitis201338Breast
Sertoli-Leydig cell tumor201339Ovary
Intramuscular hemangioma201340Soft tissue-latissimus dorsi
Nodular thyroid hyperplasia (multinodular goiter)20141Thyroid gland, left lobe
Extrarenal malignant rhabdoid tumor20142Thigh
Fibrothecoma20143Right ovary
Fusobacterium nucleatum infection20144Placenta
Invasive squamous cell carcinoma, well differentiated20145Stump of left below knee amputation
Cardiac (atrial) myxoma20146Left atrium, heart
Biphasic mesothelioma20147Right lung and pleura
Classical Hodgkin lymphoma20148Right neck
Chronic pyelonephritis with granulomas20149Kidney
Hashimoto thyroiditis, fibrous atrophy variant201410Thyroid gland
Hepatic epithelioid hemangioendothelioma201411Liver
Familial adenomatous polyposis201412Colon
Seminoma201413Right testicle
Cellular schwannoma201414Soft tissue left thorax (mediastinum)
Endometrioid carcinoma201415Uterus/endometrium
Aggressive angiomyxoma201416Vulva
Littoral cell angioma201417Spleen
Splenic marginal zone lymphoma201418Spleen
Clear cell carcinoma201419Right ovary
Nephroblastoma (Wilms tumor)201420Kidney
Sarcomatoid renal cell carcinoma201421Kidney
Granulomatous lymphadenitis/sarcoidosis201422Inguinal lymph node
Juvenile granulosa cell tumor201423Right ovary
Parvovirus B19 infection201424Placenta
Lipoblastomatosis201425Right neck and facial mass
Metastatic small cell carcinoma of the lung201426Abdomen and back
Chondroblastoma201427Distal femur
Gastric carcinoma201428Stomach
Melanosis coli201429Colon
Dedifferentiated liposarcoma201430Retroperitoneum
Malignant fibrous histiocytoma (undifferentiated pleomorphic sarcoma)201431Soft tissue, left thigh
Papillary urothelial carcinoma201432Renal pelvis
Meningioma, meningothelial type201433Brain/dura
Follicular lymphoma201434Lymph node, right inguinal region
Invasive micropapillary carcinoma of breast201435Breast
Medullary carcinoma201436Right colon
Crohn Colitis201437Ascending colon
Endometriosis201438Abdominal wall
Renal carcinoma associated with Xp11.2 translocation201439Kidney
Arrhythmogenic right ventricular cardiomyopathy/dysplasia201440Heart, right ventricle
Salivary duct carcinoma20151Parotid gland
Ganglioneuroblastoma20152Paravertebral
Malignant PEComa20153Uterus
Cellular angiofibroma20154Vagina
Extranodal Rosai-Dorfman disease20155Breast
Budd-Chiari syndrome (primary)20156Liver
Ganglioneuroma20157Mediastinum
Metastatic neuroendocrine tumor (NET)20158Liver
Serous carcinoma20159Peritoneum
Hepatic nuclear factor 1 alpha (HNF1A)-inactivated hepatocellular adenoma201510Liver
Sclerosing stromal tumor201511Ovary
Amyloidosis201512Heart
Spindle cell/pleomorphic lipoma201513Posterior neck
Lymphangioma201514Mesentery
Focal nodular hyperplasia201515Liver
Diffuse large B cell lymphoma201516Colon
Invasive mucinous adenocarcinoma/colloid carcinoma201517Lung
Thymic follicular hyperplasia201518Thymus
Hepatobiliary cystadenoma201519Liver
Meningioma201520Brain
Myositis ossificans circumscripta201521Soft tissue
Fungal infection due to hyalohyphomycotic organism (Scedosporium Apiospermum)201522Skin and soft tissue of right forearm
Chronic villitis of unknown etiology201523Third trimester placenta
Serous cystadenoma201524Pancreas
Acinar cell carcinoma201525Pancreas
Spermatocytic seminoma201526Testicle
Extra-adrenal paraganglioma201527Retroperitoneum
Diffuse large B-cell lymphoma (DLBCL), not otherwise specified201528Testicle
Adenosarcoma with sarcomatous overgrowth201529Uterus
Medullary thyroid carcinoma, sporadic201530Thyroid gland
Pilomatrixoma201531Left arm
Follicular dendritic cell sarcoma201532Duodenum
Mesenteric fibromatosis201533Mesentery attached to small bowel
Metastatic pleomorphic lobular carcinoma of breast201534Small bowel and ovary
Monophasic synovial sarcoma201535Lung
Neuroendocrine carcinoma201536Ileum
Cardiac allograft vasculopathy201537Transplanted heart
Brenner tumor with mucinous cystadenoma201538Left ovary
High-grade (conventional) osteosarcoma201539Right thigh
Endometrial stromal sarcoma201540Uterus
Mucinous adenocarcinoma of stomach20161Stomach
Mixed germ cell tumor20162Testis
Clear-cell hepatocellular carcinoma20163Liver
Angiomyolipoma20164Kidney
Extraosseous Ewing sarcoma20165Thigh
Clear cell sarcoma20166Left leg
Pleomorphic liposarcoma20167Deep soft tissue; left upper extremity
Reactive follicular hyperplasia20168Groin lymph node
Yolk sac tumor20169Right ovary
Endometrioid stromal sarcoma201610Ovary and peritoneum
Renal cell carcinoma with rhabdoid differentiation201611Kidney
Adenocarcinoma ex goblet cell carcinoid201612Ovary
Hepatoblastoma201613Liver
Thymoma201614Mediastinal mass
Myxoid liposarcoma201615Thigh mass
Squamous cell carcinoma, poorly differentiated201616Penis
Acinic cell carcinoma with high-grade transformation201617Parotid gland
Sclerosing angiomatoid nodular transformation201618Spleen
Gastrointestinal stromal tumor (GIST)201619Stomach
Placenta previa increta201620Uterus
Cystic nephroma/mixed epithelial and stromal tumor201621Kidney
Chromophobe renal cell carcinoma201622Kidney
Gestational trophoblastic disease, complete molar type201623Uterus
High-grade chondrosarcoma201624Right proximal leg
Diffuse malignant peritoneal mesothelioma, epithelioid type201625Omentum
Non-Hodgkin B-cell lymphoma, low-grade201626Colon
Myelolipoma201627Adrenal gland
Endometrioid borderline tumor201628Ovary
Papillary renal cell carcinoma, type 1201629Kidney
Leiomyoma with bizarre nuclei201630Uterus
Urothelial carcinoma, plasmacytoid type201631Bladder
Angiosarcoma201632Heart
Anaplastic thyroid carcinoma with heterologous differentiation (leiomyosarcoma)201633Neck
Tubular adenoma201634Breast
Littoral cell angioma201635Spleen
Solid-pseudopapillary neoplasm201636Pancreas
Granular cell tumor201637Soft tissue
Metastatic prostatic adenocarcinoma201638Left internal iliac lymph node
Solitary fibrous tumor, malignant201639Neck
Chordoma201640Sacrum
Leiomyosarcoma20171Abdomen, left colon, uterus, pancreas, left kidney, and retroperitoneum
Burkitt lymphoma20172Colon and omentum
Dysgerminoma20173Ovary
Metaplastic carcinoma, spindle cell carcinoma type20174Breast
Mucinous tubular and spindle cell carcinoma20175Left kidney
Myxofibrosarcoma20176Soft tissue, lower extremity
Diffuse neurofibroma20177Breast
Primary sclerosing cholangitis20178Liver
Polymorphous adenocarcinoma20179Right masticator space mass
Cardiac toxoplasmosis201710Myocardium
Pulmonary adenocarcinoma, predominantly papillary type201711Lung
Adult granulosa cell tumor201712Ovary
Mesoblastic nephroma/congenital mesoblastic nephroma201713Right kidney
Cryptococcal pneumonia201714Lung
Leiomyosarcoma201715Bladder
Metastatic prostatic adenocarcinoma201716Right testis
Metastatic pheochromocytoma201717Liver
Mucinous adenocarcinoma201718Colon
Primary biliary cholangitis201719Liver
Schwannoma201720Left posterior calf
Acetaminophen hepatotoxicity201721Liver
Cardiac hemochromatosis201722Heart
Classical Hodgkin lymphoma, mixed cellularity subtype201723Spleen
Leiomyosarcoma201724Stomach
Malignant peripheral nerve sheath tumor, low-grade201725Mediastinum
Diffuse large B-cell lymphoma201726Stomach
Solitary fibrous tumor201727Liver
Pheochromocytoma201728Right kidney and retroperitoneum
Rhabdomyosarcoma201729Soft tissue, pelvis
Sarcoidosis201730Heart
Pseudomembranous colitis201731Colon
Arrhythmogenic right ventricular cardiomyopathy201732Heart
Pheochromocytoma201733Adrenal gland
Adenoid cystic carcinoma201734Right neck
Adenomyosis with pseudodecidual change201735Uterus
Familial hypertrophic cardiomyopathy201736Heart
Alveolar soft part sarcoma201737Left thigh
Oncocytoma201738Kidney
Steatohepatitis with cholestasis and fibrosis, alcohol related201739Liver
Atypical lipomatous tumor201740Chest wall
Serous cystadenoma20181Pancreas
Typical carcinoid20182Lung
Iatrogenic immunodeficiency-associated lymphoproliferative disorder (Epstein Barr virus (EBV) positive large B-cell lymphoma)20183Terminal ileum and ascending colon
Pleomorphic liposarcoma20184Neck
Chorangioma20185Third trimester placenta
Intrahepatic cholangiocarcinoma20186Liver
Fundic gland polyps20187Stomach
Pseudomembranous colitis20188Colon
Diffuse large B-Cell lymphoma, germinal center B-cell like20189Small bowel mesentery
Clear cell renal cell carcinoma201810Left kidney
Polycystic disease of the liver201811Liver
Diffuse epithelioid malignant mesothelioma201812Peritoneum
Castleman disease201813Mediastinum
Neuroblastoma, poorly-differentiated201814Posterior mediastinum
Aggressive angiomyxoma201815Deep soft tissue of pelvis
Signet ring stromal cell tumor201816Ovary
Epithelioid trophoblastic tumor201817Uterus
Adrenocortical carcinoma, oncocytic type201818Adrenal gland
Synovial sarcoma201819Soft tissue, left chest wall
Renal cell carcinoma, unclassifiable201820Kidney
Fibroepithelial stromal polyp201821Vulva
Thymoma, type AB201822Mediastinum
Adrenal cortical carcinoma201823Adrenal gland
Hereditary amyloidosis due to transthyretin mutation201824Heart
Mantle cell lymphoma201825Spleen
Intranodal palisaded myofibroblastoma201826Inguinal lymph node
Ganglioneuroma, mature201827Left adrenal gland
Islet cell tumor (pancreatic endocrine tumor)201828Pancreas
Pneumatosis cystoides intestinalis201829Small intestine
Anastomosing hemangioma201830Left kidney
Metastatic melanoma201831Neck
Lymphocytic myocarditis201832Heart
Primary myelofibrosis with extramedullary hematopoiesis201833Spleen
Dedifferentiated liposarcoma201834Deep soft tissue, retroperitoneum
Amnion nodosum201835Placenta
Invasive ductal carcinoma201836Left breast
Hashimoto thyroiditis201837Thyroid
Pancreatic neuroendocrine tumor, clear cell variant201838Pancreas
WHO grade 1 meningioma201839Cranial
Nephroblastoma (Wilms tumor)201840Kidney
Nephroblastoma with heterologous elements (teratoid Wilms tumor)20191Left kidney
Fibroma20192Left Ovary
Mitochondrial cardiomyopathy20193Heart
TFE3-associated renal cell carcinoma20194Kidney
Hepatocellular carcinoma20195Liver
Poorly differentiated squamous cell carcinoma20196Lung
Seminoma20197Testis
Well-differentiated liposarcoma20198Retroperitoneum
Embryonal rhabdomyosarcoma20199Uterine cervix
Anaplastic thyroid carcinoma201910Anterior neck
Epithelioid angiosarcoma201911Right Breast
Myxoid liposarcoma201912Right thigh
Well-differentiated neuroendocrine tumor201913Peripancreatic lymph node
Splenic marginal zone lymphoma201914Spleen
Myxofibrosarcoma201915Soft tissue
Leiomyosarcoma201916Liver
Invasive mucinous adenocarcinoma201917Lung
Well-differentiated papillary mesothelioma201918Ovary
Small lymphocytic lymphoma/chronic lymphocytic leukemia201919Lymph node
Cellular leiomyoma201920Uterus
Invasive lobular carcinoma201921Breast
Follicular dendritic cell sarcoma201922Abdomen
Nephroblastoma (Wilms tumor), blastema-predominant201923Left kidney
Benign Brenner tumor201924Ovary
Chronic viral hepatitis B201925Liver
Malignant mesothelioma, epithelioid201926Omentum
Malignant paraganglioma201927Retroperitoneum
Carcinosarcoma201928Uterus
Gastrointestinal stromal tumor201929Stomach
Thymoma, type AB201930Mediastinum
Cardiac amyloidosis201931Heart
Metastatic carcinoma with mesenchymal differentiation201932Breast
Poorly cohesive gastric carcinoma201933Stomach
Splenic diffuse red pulp B-cell lymphoma201934Spleen
Steatohepatitis201935Liver
Pulmonary sarcoidosis201936Lung
Carcinoid tumor201937Ovary
Urothelial carcinoma, invasive201938Left kidney
Lipoma201939Left flank
Diffuse large B-cell lyphoma, germinal center B-cell subtype201940Small bowel
High-grade (conventional) osteosarcoma20201Bone, distal femur
Myxoid liposarcoma20202Thigh mass
High-grade serous ovarian carcinoma with SET features20203Ovary
Metaplastic breast carcinoma with mesenchymal differentiation20204Chest wall
Follicular lymphoma, grade 3A20205Lymph node, right neck
Acinar cell carcinoma20206Pancreas
Salivary duct carcinoma20207Parotid gland
Well-Differentiated neuroendocrine tumor20208Ileum
Diffuse large B-cell lymphoma, not otherwise specified (DLBCL, NOS)20209Colon
Splenic marginal zone lymphoma202010Spleen
Congenital mesoblastic nephroma202011Kidney
Hepatocellular carcinoma202012Liver
Endometrioid ovarian adenocarcinoma202013Left ovary
Granular cell tumor202014Vulva
Xanthogranulomatous pyelonephritis202015Left kidney
Extra-adrenal paraganglioma (sympathetic paraganglioma)202016Retroperitoneum
Clostridium difficile colitis202017Colon
Poorly differentiated gastric adenocarcinoma202018Stomach
Metastatic endocervical adenocarcinoma202019Ovary
Follicular lymphoma, follicular and diffuse, low grade (grade 1-2)202020Lymph node, axilla
Seminoma202021Testis
Embryonal rhabdomyosarcoma202022Spermatic cord and testis
Dermatofibrosarcoma protuberans202023Arm mass
Desmoplastic small round cell tumor202024Intraabdominal mass
Inflammatory liposarcoma202025Retroperitoneum
Focal nodular hyperplasia202026Liver
Ganglioneuroblastoma202027Adrenal gland
Ulcerative colitis with pseudopolyposis202028Colon
Metastatic prostatic adenocarcinoma202029Presacral mass
Low-grade endometrial stromal sarcoma202030Uterus
Benign Brenner tumor202031Ovary
Metastatic teratoma, consistent with growing teratoma syndrome202032Retroperitoneum
Undifferentiated pleomorphic sarcoma202033Left thigh
Juvenile granulosa cell tumor202034Ovary
Neuroblastoma202035Adrenal gland
MiT family translocation renal cell carcinoma202036Kidney
Metastatic pancreatic ductal adenocarcinoma202037Ovary
Diffuse Large B-cell lymphoma, not otherwise specified202038Spleen
Crohn disease of the small intestine202039Small intestine
Blastomycosis202040Lung
Primary gastric adenocarcinoma20211Stomach
Solitary fibrous tumor20212Soft tissue, inguinal mass
Inflammatory myofibroblastic tumor20213Uterus
Pulmonary adenocarcinoma20214Heart
Myelolipoma with sickle cell disease20215Adrenal gland
Desmoid fibromatosis20216Retroperitoneum
Chronic histiocytic intervillositis20217Placenta
Sclerosing pneumocytoma20218Lung
Urothelial carcinoma, invasive20219Kidney
Metastatic Leydig cell tumor202110Retroperitoneal lymph node

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