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February 1, 2023
Find your diagnosis
The diagnosis library is a collection of articles written by pathologists to help you understand your diagnosis and pathology report. The articles in the library are organized by area of the body. Need help finding an article? Contact us.
To start, please select an area of the body from the list below.
Adrenal gland
Appendix
Anal canal and anus
Bladder, ureters, and urethra
Breast
Bone
Brain and nervous system
Cervix
Colon and rectum
Esophagus
Gallbladder
Kidneys
Larynx (vocal cords, vallecula, and commissure)
Liver and bile ducts
Lungs and pleura
Lymph nodes, bone marrow, and blood
Oral cavity (tongue, lips, floor of mouth, hard palate, gingiva, buccal mucosa, mandible, and maxilla)
Oropharynx (tonsils, soft palate, and base of tongue)
Ovaries and fallopian tubes
Nasal cavity and sinuses (maxillary, ethmoid, frontal, and sphenoid sinuses)
Nasopharynx
Pancreas
Parathyroid gland
Penis and scrotum
Prostate gland
Salivary glands (parotid, submandibular glands, and minor salivary glands)
Skin
Stomach
Small intestine (duodenum, jejunum, ileum)
Soft tissues (muscle, fat, connective tissue)
Thyroid gland
Testis (male gonads)
Uterus and endometrium
Vagina
Vulva
*
Adrenal gland
*
Appendix
Low grade appendiceal mucinous neoplasm (LAMN)
Well-differentiated neuroendocrine tumour (NET)
*
Anal canal and anus
High grade squamous intraepithelial lesion (HSIL)
*
Bladder, ureters, and urethra
High grade papillary urothelial carcinoma
Low grade papillary urothelial carcinoma
Urothelial carcinoma in situ (CIS)
*
Brain and nervous system
Astrocytoma, IDH-mutant, CNS WHO grade 2
Astrocytoma, IDH-mutant, CNS WHO grade 3
Astrocytoma, IDH-mutant, CNS WHO grade 4
*
Breast
Atypical ductal hyperplasia (ADH)
Columnar cell hyperplasia (CCH)
Ductal carcinoma in situ (DCIS)
Invasive ductal carcinoma with apocrine features
Lobular carcinoma in situ (LCIS)
Pseudoangiomatous stromal hyperplasia (PASH)
Secretory carcinoma of the breast
Usual ductal hyperplasia (UDH)
*
Bone
Central atypical cartilaginous tumour
Dedifferentiated chondrosarcoma
*
Cervix
Adenocarcinoma in situ (AIS) of the cervix
ASC-H (atypical squamous cells, cannot rule out HSIL)
ASC-US (atypical squamous cells of undetermined significance)
Atypical glandular cells, not otherwise specified
Atypical glandular cells, favour neoplastic
Cervical intraepithelial neoplasia (CIN)
HSIL (high grade squamous intraepithelial lesion)
LSIL (low grade squamous intraepithelial lesion)
NILM (negative for intraepithelial lesion or malignancy)
Squamous cell carcinoma of the cervix
*
Colon and rectum
Adenocarcinoma of the colon and rectum
Gastrointestinal stromal tumour (GIST)
Hyperplastic polyp of the colon and rectum
Inflammatory polyp of the colon and rectum
Invasive adenocarcinoma of the colon and rectum
Mucinous adenocarcinoma of the colon and rectum
Neuroendocrine carcinoma of the colon and rectum
Poorly differentiated neuroendocrine carcinoma of the colon and rectum
Sessile serrated adenoma (SSA)
Traditional serrated adenoma (TSA)
Tubular adenoma (TA) of the colon and rectum
Tubulovillous adenoma (TVA) of the colon and rectum
Villous adenoma (VA) of the colon and rectum
Well differentiated neuroendocrine tumour of the colon and rectum
*
Esophagus
Adenocarcinoma of the esophagus
Intramucosal adenocarcinoma of the esophagus
Squamous cell carcinoma of the esophagus
*
Gallbladder
Intracholecystic papillary neoplasm (ICPN) of the gallbladder
*
Kidneys
Chromophobe renal cell carcinoma
Clear cell renal cell carcinoma
Diabetic nephropathy (diabetic glomerulosclerosis)
Papillary renal cell carcinoma
TFE3-rearranged renal cell carcinoma
Xp11 translocation renal cell carcinoma
*
Larynx
Keratinizing squamous dysplasia of the larynx
Squamous cell carcinoma of the larynx
Squamous carcinoma in situ (CIS) of the larynx
Squamous dysplasia of the larynx
*
Liver and bile ducts
Hepatocellular carcinoma (HCC)
Intrahepatic cholangiocarcinoma
Primary biliary cholangitis (PBC)
Primary sclerosing cholangitis (PSC)
*
Lungs and pleura
Large cell neuroendocrine carcinoma
Minimally invasive adenocarcinoma (MIA)
*
Lymph nodes, bone marrow, and blood
Myelodysplastic syndromes (MDS)
*
Nasal cavity and paranasal sinuses
Intestinal-type sinonasal adenocarcinoma
Sinonasal keratinizing squamous cell carcinoma (KSCC)
Sinonasal non-keratinizing squamous cell carcinoma (NKSCC)
Non-intestinal-type sinonasal adenocarcinoma
Sinonasal undifferentiated carcinoma (SNUC)
*
Nasopharynx
*
Oral cavity
Keratinizing squamous dysplasia
Squamous carcinoma in situ (CIS)
*
Oropharynx
HPV-associated squamous cell carcinoma
Non-keratinizing squamous cell carcinoma
*
Ovaries and fallopian tubes
Endometrioid borderline tumour
Granulosa cell tumour, adult type
Mitotically active cellular fibroma
Serous tubal intraepithelial carcinoma (STIC)
*
Pancreas
Well-differentiated neuroendocrine tumour
*
Parathyroid gland
Enlarged and hypercellular parathyroid gland
*
Penis and scrotum
HPV-associated squamous cell carcinoma of the penis
Penile intraepithelial neoplasia (PeIN)
Non-HPV squamous cell carcinoma of the penis
*
Prostate gland
Adenocarcinoma of the prostate
Benign prostatic hyperplasia (BPH)
High grade prostatic intraepithelial neoplasia (PIN)
*
Salivary glands
Hyalinizing clear cell carcinoma (HCCC)
*
Skin
Dermatofibrosarcoma protuberans (DFSP)
Infiltrating basal cell carcinoma
Micronodular basal cell carcinoma
Pigmented basal cell carcinoma
Sclerosing basal cell carcinoma
Squamous cell carcinoma in situ
Superficial basal cell carcinoma
*
Small intestine
Gastrointestinal stromal tumour (GIST)
Nonampullary duodenal adenoma
*
Stomach
Gastrointestinal stromal tumour (GIST)
Well-differentiated neuroendocrine tumour of the stomach
*
Soft tissues
Giant cell tumour of tendon sheath
Malignant peripheral nerve sheath tumour (MPNST)
Undifferentiated pleomorphic sarcoma
Well-differentiated liposarcoma
*
Testis
*
Thyroid gland
Encapsulated angioinvasive follicular thyroid carcinoma
Encapsulated angioinvasive Hurthle cell carcinoma
Encapsulated angioinvasive oncocytic carcinoma
Infiltrative follicular variant papillary thyroid carcinoma
Invasive encapsulated follicular variant papillary thyroid carcinoma
Minimally invasive encapsulated follicular variant papillary thyroid carcinoma
Minimally invasive follicular thyroid carcinoma
Minimally invasive Hurthle cell carcinoma
Minimally invasive oncocytic carcinoma
Poorly differentiated thyroid carcinoma
Non-invasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP)
Papillary thyroid microcarcinoma
Suspicious for follicular neoplasm
Widely invasive follicular thyroid carcinoma
Widely invasive Hurthle cell carcinoma
Widely invasive oncocytic carcinoma
*
Uterus and endometrium
Atypical endometrial hyperplasia
Disordered proliferative endometrium
Endometrial clear cell carcinoma
Endometrial hyperplasia without atypia
Endometrial endometrioid adenocarcinoma
Endometrioid intraepithelial neoplasia (EIN)
*
Vagina
High grade squamous intraepithelial lesion (HSIL)
Low grade squamous intraepithelial lesion (LSIL)
*
Vulva
Differentiated vulvar intraepithelial neoplasia (dVIN)
High-grade squamous intraepithelial lesion (HSIL)
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