Diagnosis library

The diagnosis library is a collection of articles written by pathologists to help you understand your diagnosis and pathology report. Scroll down to see a complete list of all the articles in the library in alphabetical order. Need help finding an article? Contact us.

A

Acinic cell carcinoma

Actinic keratosis

Acute appendicitis

Acute lung injury

Adenocarcinoma in situ (AIS)

Adenocarcinoma

Adenoid cystic carcinoma

Adrenocortical adenoma

Adrenocortical carcinoma

Alveolar rhabdomyosarcoma

Ameloblastoma

Anaplastic thyroid carcinoma

Anemia of chronic disease

Angiolipoma

Angiomyolipoma (AML)

Angiosarcoma

ASC-H on a Pap smear of the cervix

ASC-US on a Pap smear of the cervix

Astrocytoma, IDH-mutant, CNS WHO grade 2

Astrocytoma, IDH-mutant, CNS WHO grade 3

Astrocytoma, IDH-mutant, CNS WHO grade 4

Atrophic endometrium

Atrophy of the ovary

Atypical carcinoid tumour of the lung

Atypical ductal hyperplasia (ADH) of the breast

Atypical endometrial hyperplasia

Atypical glandular cells, favor neoplastic

Atypical glandular cells, not otherwise specified

Atypical lipomatous tumour (ALT)

Autoimmune hepatitis

B

Barrett’s esophagus

Basal cell adenoma

Basal cell carcinoma of the skin

Basosquamous carcinoma of the skin

Benign Brenner tumour of the ovary

Benign follicular nodule of the thyroid gland

Benign phyllodes tumour of the breast

Benign prostatic hyperplasia (BPH)

Bile duct hamartoma

Biphasic salivary gland neoplasm

Bullous pemphigoid

Burkitt lymphoma

C

Carcinoid tumourlet of the lung

Carcinosarcoma of the uterus

Celiac disease

Cellular fibroma of the ovary

Cellular leiomyoma of the uterus

Central atypical cartilaginous tumour

Cervical intraepithelial neoplasia (CIN)

Chemical gastropathy

Chondroblastic osteosarcoma

Chondrosarcoma

Chordoma

Chromophobe renal cell carcinoma

Chronic active colitis

Chronic active gastritis

Chronic cholecystitis

Chronic colitis

Chronic gastritis

Chronic inactive gastritis

Chronic lymphocytic leukemia

Chronic lymphocytic thyroiditis

Chronic rhinosinusitis

Cirrhosis

Clear cell carcinoma of the ovary

Clear cell renal cell carcinoma

Collagenous colitis

Columnar cell change (CCC) of the breast

Columnar cell hyperplasia (CCH) of the breast

Complex sclerosing lesion of the breast

Compound nevus

Condyloma acuminatum

Congenital nevus

Conventional chondrosarcoma

Corpus luteum cyst

Cortical inclusion cyst

Cutaneous lupus erythematosus

Cylindroma

Cystic follicle of the ovary

D

Dedifferentiated chondrosarcoma

Dedifferentiated liposarcoma

Deep fibromatosis

Dentigerous cyst

Dermal nevus

Dermatofibroma

Dermatofibrosarcoma protuberans (DFSP)

Desmoid tumour

Diabetic nephropathy (diabetic glomerulosclerosis)

Differentiated vulvar intraepithelial neoplasia (dVIN)

Diffuse alveolar damage (DAD)

Diffuse large B-cell lymphoma

Diffuse papillary hyperplasia of the thyroid gland

Disordered proliferative endometrium

Ductal adenocarcinoma of the pancreas

Ductal carcinoma in situ (DCIS) of the breast

Duodenal adenoma

Dysplasia in the stomach

Dysplastic nevus

E

Embryonal carcinoma of the male testis

Embryonal rhabdomyosarcoma

Encapsulated angioinvasive follicular thyroid carcinoma

Encapsulated angioinvasive Hurthle cell carcinoma

Encapsulated angioinvasive oncocytic carcinoma

Enchondroma

Endocervical adenocarcinoma

Endocervical polyp

Endometrial clear cell carcinoma

Endometrial endometrioid carcinoma

Endometrial hyperplasia without atypia

Endometrial polyp

Endometrial serous carcinoma

Endometrioid borderline tumour of the ovary

Endometrioid carcinoma of the ovary

Endometrioid intraepithelial neoplasia (EIN)

Endometriosis

Enlarged and hypercellular parathyroid gland

Eosinophilic esophagitis

Epidermoid cyst

Erosive gastritis

Ewing family of tumours

Ewing sarcoma

Extramammary Paget disease of the vulva

F

Fibroadenoma of the breast

Fibrocystic change of the breast

Fibroma of the oral cavity

Fibromatosis

Fibrous histiocytoma

Flat epithelial atypia of the breast

Follicle cyst of the ovary

Follicular adenoma of the thyroid gland

Follicular lymphoma

Follicular neoplasm of the thyroid gland

Fracture

G

Ganglion cyst

Gastrointestinal stromal tumour (GIST)

Giant cell tumour of bone

Giant cell tumour of tendon sheath

Glioblastoma, IDH-wildtype

Granular cell tumour

Granulosa cell tumour, adult type

H

Helicobacter gastritis

Hemangioma

Hemolytic anemia

Hepatocellular carcinoma (HCC)

Hidradenoma

High grade dysplasia of the larynx

High grade papillary urothelial carcinoma

High grade prostatic intraepithelial neoplasia (PIN)

High grade serous carcinoma of the ovary and fallopian tube

High grade squamous intraepithelial lesion (HSIL)

Hodgkin lymphoma

HPV-associated squamous cell carcinoma of the oropharynx

HPV-associated squamous cell carcinoma of the penis

Hurthle cell adenoma

Hurthle cell carcinoma

Hyalinizing clear cell carcinoma (HCCC)

Hyperplastic polyp of the colon and rectum

Hyperplastic polyp of the stomach

I

Immature teratoma of the ovary

Infiltrating basal cell carcinoma of the skin

Infiltrative follicular variant papillary thyroid carcinoma

Inflammatory polyp of the colon and rectum

Inflammatory polyp of the stomach

Intestinal-type sinonasal adenocarcinoma

Intracholecystic papillary neoplasm

Intraductal papilloma of the breast

Intrahepatic cholangiocarcinoma

Intramucosal adenocarcinoma of the esophagus

Intramuscular lipoma

Invasive adenocarcinoma of the colon and rectum

Invasive ductal carcinoma of the breast

Invasive ductal carcinoma with apocrine features of the breast

Invasive encapsulated follicular variant papillary thyroid carcinoma

Invasive lobular carcinoma of the breast

Invasive melanoma of the skin

Invasive mucinous carcinoma of the breast

Iron-deficiency anemia

J

Junctional nevus

K

Kaposi sarcoma

Keloid scar

Keratinizing squamous dysplasia of the larynx

Keratinizing squamous dysplasia of the oral cavity

L

Large cell neuroendocrine carcinoma of the lung

Leiomyoma of the uterus

Leiomyosarcoma

Leiomyosarcoma of the uterus

Lentigo maligna

Lichen sclerosus of the vulva

Lichenoid mucositis

Lobular capillary hemangioma

Lobular carcinoma in situ (LCIS) of the breast

Low grade appendiceal mucinous neoplasm (LAMN)

Low grade papillary urothelial carcinoma

Low grade serous carcinoma of the ovary

Low grade squamous intraepithelial lesion (LSIL)

Lymphocytic colitis

M

Malignant peripheral nerve sheath tumour (MPNST)

Mantle cell lymphoma

Mature cystic teratoma of the ovary

Medullary carcinoma of the colon

Medullary thyroid carcinoma

Megaloblastic anemia

Melanoma in situ of the skin

Meningioma

Merkel cell carcinoma

Mesothelioma

Micronodular basal cell carcinoma of the skin

Microscopic colitis

Minimally invasive adenocarcinoma (MIA) of the lung

Minimally invasive encapsulated follicular variant papillary thyroid carcinoma

Minimally invasive follicular thyroid carcinoma

Minimally invasive Hurthle cell carcinoma

Minimally invasive oncocytic carcinoma of the thyroid gland

Mitotically active cellular fibroma of the ovary

Mitotically active leiomyoma of the uterus

Mixed germ-cell tumour of the male testis

Mucinous adenocarcinoma of the colon and rectum

Mucinous borderline tumour of the ovary

Mucinous carcinoma of the ovary

Mucinous cystadenofibroma of the ovary

Mucinous cystadenoma of the ovary

Mucinous cystic neoplasm of the pancreas

Mucocele of the oral cavity

Mucoepidermoid carcinoma

Mucosal melanoma of the head and neck

Myelodysplastic syndromes (MDS)

Myelolipoma

Myxofibrosarcoma

Myxoid liposarcoma

N

Nasopharyngeal carcinoma

Negative for intraepithelial lesion or malignancy (NILM) of the cervix

Neuroendocrine carcinoma of the colon and rectum

Neurofibroma

Nodular basal cell carcinoma of the skin

Nodular fasciitis

Nodular follicular disease of the thyroid gland

Nodular thyroid hyperplasia

Nonampullary duodenal adenoma​

Non-Hodgkin lymphoma

Non-HPV squamous cell carcinoma of the penis

Non-intestinal-type sinonasal adenocarcinoma

Non-invasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP)

Non-keratinizing squamous cell carcinoma of the oropharynx

NUT carcinoma

O

Olfactory neuroblastoma

Oligodendroglioma

Oncocytic adenoma of the thyroid gland

Oncocytoma of the head and neck

Oncocytoma of the kidney

Oral epithelial dysplasia

Organizing pneumonia

Osteoblastoma

Osteochondroma

Osteoid osteoma

Osteosarcoma

Ovarian fibroma

P

Palmar fibromatosis

Papillary lesion of the breast

Papillary renal cell carcinoma

Papillary thyroid carcinoma

Parathyroid adenoma

Penile intraepithelial neoplasia (PeIN)

Peptic duodenitis

Periovarian adhesions

Pheochromocytoma

Phyllodes tumour of the breast

Pigmented basal cell carcinoma of the skin

Pilar cyst

Plantar fibromatosis

Plasma cell neoplasm

Plasmacytoma

Pleomorphic adenoma

Pleomorphic lipoma

Pneumonia

Polypoid cystitis

Poorly differentiated neuroendocrine carcinoma of the colon and rectum

Poorly differentiated thyroid carcinoma

Poroma

Primary biliary cholangitis (PBC)

Primary sclerosing cholangitis (PSC)

Proliferative endometrium

Pseudoangiomatous stromal hyperplasia (PASH) of the breast

Pyogenic granuloma

R

Radial scar of the breast

Reactive gastropathy

Reflux esophagitis

Rhabdomyosarcoma

S

Salivary duct carcinoma

Schneidrian papilloma

Schwannoma

Sclerosing adenosis of the breast

Sclerosing basal cell carcinoma of the skin

Sebaceous carcinoma

Seborrheic keratosis

Secretory carcinoma of the breast

Secretory endometrium

Seminoma of the male testis

Serous borderline tumour of the ovary

Serous cystadenoma of the ovary

Serous tubal intraepithelial carcinoma (STIC)​ of the fallopian tube

Sessile serrated adenoma of the colon and rectum

Sessile serrated lesion of the colon and rectum

Sessile serrated polyp of the colon and rectum

Sex cord-stromal tumour of the ovary

Sinonasal inflammatory polyp

Sinonasal keratinizing squamous cell carcinoma (KSCC)

Sinonasal non-keratinizing squamous cell carcinoma (NKSCC)

Sinonasal papilloma

Sinonasal undifferentiated carcinoma (SNUC)

Small cell carcinoma of the lung

Small lymphocytic lymphoma (SLL)

Solitary fibrous tumour

Spermatocele

Spindle cell lipoma

Spindle cell squamous cell carcinoma of the larynx

Spiradenoma

Spitz nevus

Spongiotic dermatiti

Squamous cell carcinoma in situ

Squamous cell carcinoma

Squamous dysplasia

Squamous papilloma

Steatohepatitis

Steatosis

Superficial basal cell carcinoma of the skin

Superficial fibromatosi

Suspicious for follicular neoplasm of the thyroid gland

Synovial sarcoma

Syringoma

T

TFE3-rearranged renal cell carcinoma

Thrombotic microangiopathy

Traditional serrated adenoma of the colon and rectum

Trichilemmal cyst

Tubular adenoma of the colon and rectum

Tubulovillous adenoma of the colon and rectum

Typical carcinoid tumour of the lung

U

Undifferentiated pleomorphic sarcoma

Urothelial carcinoma

Urothelial carcinoma in situ

Usual ductal hyperplasia of the breast

Usual interstitial pneumonia

Uterine serous carcinoma

V

Verruca vulgaris

Villous adenoma of the colon and rectum

Vocal cord nodule

Vocal cord polyp

von Meyenburg complex

W

Warthin tumour

Well differentiated liposarcoma

Well differentiated neuroendocrine tumour

Widely invasive follicular thyroid carcinoma

Widely invasive Hurthle cell carcinoma

Widely invasive oncocytic carcinoma of the thyroid gland

X

Xanthelasma

Xanthoma

Xp11 translocation renal cell carcinoma

Y

Yolk-sac tumour of the male testis

A+ A A-