Ottawa Atlas of Pathology

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Diffuse neurofibroma

Urothelial carcinoma in situ of the bladder

Unicentric Castleman's disease highlighted by CD21

Unicentric Castleman's disease

Undifferentiated adenocarcinoma in the colon

Tubular adenoma with pseudoinvasion in the colon

Strongyloides stercoralis

Spread through the airways of adenocarcinoma in the lung

Spindle cell squamous cell carcinoma of the larynx

Spindle cell squamous cell carcinoma arising from a better differentiated tumour

Solid papillary carcinoma of the breast

Sinonasal non-intestinal type adenocarcinoma

Sinonasal intestinal type adenocarcinoma

Signet ring type adenocarcinoma of the stomach

Severe keratinizing squamous dysplasia of the larynx with papillary growth

Secretory carcinoma of the breast

Schwannoma of the tongue

Sarcomatoid variant urothelial carcinoma with osteosarcomatous differentiation

Rosai-Dorfman disease

Rhizopus species

Radiation induced angiosarcoma of the breast

Psammoma bodies and nuclear atypia in papillary thyroid carcinoma

Pleomorphic liposarcoma

Pleomorphic adenoma of the hard palate

Phosphaturic mesenchymal tumour

Papillary thyroid carcinoma

Paget disease of the breast

Olfactory neuroblastoma

NUT carcinoma

Non-invasive follicular thyroid neoplasm with papillary-like nuclear features

Necrotizing granuloma in a patient with tuberculosis

Myxofibrosarcoma

Mucinous borderline tumour of the ovary

Metastatic serous carcinoma of the uterus to the ovary

Malignant phyllodes tumour

Lymphoepithelial carcinoma of the parotid gland

Lymphoepithelial carcinoma in the bladder

Low magnification image showing follicular nodular disease in the thyroid gland

Low magnification image of a myelolipoma in the adrenal gland

Low grade squamous intraepithelial lesion of the cervix

Low grade squamous intraepithelial lesion of the anal canal

Leiomyosarcoma of the uterus

Leiomyosarcoma of the rectum

Large cell neuroendocrine carcinoma of the lung

Invasive ductal carcinoma arising from ductal carcinoma in situ of the breast

HPV-associated oral epithelial dysplasia with adjacent normal epithelium

High grade squamous intraepithelial lesion of the cervix with adjacent normal epithelium

High grade squamous intraepithelial lesion and adenocarcinoma in situ of the cervix

Giant cell arteritis

Extramammary Paget disease of the vulva

Exophytic type sinonasal papilloma

Echinococcus in bone

Diffuse sclerosing papillary thyroid carcinoma

Diffuse cutaneous neurofibroma

Differentiated liposarcoma arising from well differentiated liposarcoma

Dermatofibrosarcoma

Circumscribed solitary neuroma of the lip

Choroidal melanoma

Chordoma

Chondroblastic osteosarcoma of the maxilla

Chondroblastic osteosarcoma

Cholangiocarcinoma and hepatocellular carcinoma in the liver

Cell infected with herpes simplex virus

Aspergillus in a bronchioalveolar lavage

Apocrine type intraductal carcinoma of the parotid gland

Adenoid cystic carcinoma of the parotid gland

Adenoid cystic carcinoma of the breast

Adenocarcinoma in situ in the cervix

Adenocarcinoma arising from a background of Barrett's esophagus

A lobule in the breast involved by lobular carcinoma in situ

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