Wikipedia:Open Pathology Project/List of topics

This page contains 87 topic areas.

NOTE : Adding structured data only in cases where the item is prominent.

Image Article Description Commons histopathology category Added structured data?
Neutrophils Micrograph showing neutrophils in acute inflammation. Category: Neutrophils  checkY
Plasma cells Plasma cell showing eccentrically placed round nucleus with cart wheel like chromatin. Category: Plasma cells  checkY
Eosinophils Micrograph showing low power view of Eosinophils. Category: Eosinophils  checkY
Lymphocytes Micrograph showing lymphocytes in caseating granuloma.  Category: Lymphocytes checkY
Fibroblasts Fibroblasts in intestinal pneumonia  Category: Fibroblasts checkY
Foam cells Histopathology of cholesterolosis of the gallbladder, with annotated foam cell  Category: Foam cell checkY
Macrophages Lung showing congestion with plenty of alveolar macrophages containing phagocytosed brownish granular hemosiderin pigment.  Category: Macrophages checkY
Langhan cells Langhans giant cell in the centre of a non-caseating granuloma.  Category: Langhans giant cells checkY
Foreign body giant cells Micrograph showing a foreign body engulfed by a giant cell. Category: Foreign body giant cell  checkY
Granulation tissue Micrograph showing proliferating capillaries, fibroblasts and acute inflammatory cells.  Category: Histopathology of granulation tissue checkY
Foreign body granuloma Granulomatous reaction to keratin characterized by foreign body giant cells and chronic inflammatory cells. Category: Histopathology of foreign body granuloma  checkY, SDC : foreign body granuloma, silicone granuloma)
Tuberculous granuloma Caseating granulomatous lesion with areas of amorphous granular eosinophilic necrotic debris known as caseation (on the right half) bordered by collections of epitheloid cells, Langhan giant cells and lymphocytes. Category: Histopathology of tuberculous granuloma  checkY
Fat necrosis Breast lump showing an area of fat necrosis showing shadowy outlines of necrotic adipocytes surrounded by an inflammatory reaction with cholesterol clefts. Category: Histopathology of liponecrosis  checkY
Calcinosis cutis Multiple amorphous basophilic calcium deposits in the dermis. Category: Histopathology of calcinosis cutis  checkY
Hemochromatosis liver Micrograph of hemochromatosis liver showing hepatocytes with coarse golden yellow granules of hemosiderin within the cytoplasm. These granules stain with Prussian blue stain.  Category: Histopathology of hemochromatosis checkY SDC: HFE hereditary hemochromatosis
Caseous necrosis Caseating granulomatous lesion with areas of amorphous granular eosinophilic necrotic debris known as caseation (on the right half) bordered by collections of epitheloid cells, Langhan giant cells and lymphocytes.  Category: Histopathology of caseous necrosis checkY
Fatty change in liver Hepatic parenchymal cell cytoplasm containing clear vacuoles containing fat of varying sizes, displacing the nucleus towards the periphery. Category: Lipid steatosis  checkY SDC: steatosis
Carcinoma in situ CIN-III (HSIL) showing diffuse severe atypia with loss of maturation involving full thickness of epithelium with intact basement membrane. Category: Histopathology of carcinomas in situ checkY
Lymph node metastasis Lymph node showing metastases from colorectal carcinoma Category: Lymph node metastases  checkY
Fibroadenoma breast A well circumscribed lesion showing proliferation of intralobular stroma compressing and distorting the epithelium. Category: Histopathology of breat fibroadenomas  checkY
Tumor giant cell Malignant neoplasm showing marked anaplasia. Note the marked nuclear pleomorphism, bizarre cells and tumor giant cells. Category: Histopathology of giant cell tumors   checkY
Capillary hemangioma Micrograph showing capillary hemangioma of skin.  Category: Histopathology of capillary hemangioma checkY
Lepromatous leprosy Skin biopsy showing epidermal atrophy and multiple dermal infiltrates. Category: Histopathology of leprosy  checkY
Tuberculoid leprosy Skin biopsy showing multiple peri-appendageal granulomas. Category: Histopathology of leprosy  checkY
Tuberculous lymph node Caseating granulomatous lesion with areas of amorphous granular eosinophilic necrotic debris known as caseation (on the right half) bordered by collections of epitheloid cells, Langhan giant cells and lymphocytes. Category: Histopathology of tuberculous lymphadenitis  checkY SDC: Tuberculous lymphadentis
Tuberculosis of intestine The lamina propria is stuffed with wall-to-wall histiocytes. This Kinyoun carbolfuchsin stain shows innumerable acid-fast bacilli Category: Histopatology of gastrointestinal tuberculosis checkY SDC: Gastrointestinal tuberculosis
Helminth in appendix Micrograph showing lumen of appendix and cut section of pin worm. Category: Histopathology of appendix with Enterobius vermicularis  checkY SDC: Parasitic helminthiasis infectious disease
Chromoblastomycosis Micrograph of chromoblastomycosis showing sclerotic bodies in dermis. Category: Histopathology of chromoblastomycosis  checkY
Amoebiasis in intestine Colonic biopsy showing trophozoite of Entamoeba Histolytica with ingested red blood cells.  Category: Histopathology of amoebiasis checkY
Rhinosporidiosis Section of a polyp containing Rhinosporidium seeberi Category: Histopathology of rhinosporidiosis   checkY
Filarial lymphadenitis Micrograph showing section of an adult filarial worm. Surrounding tissue shows dense infiltration of eosinophils.  Category: Histopathology of filariases checkY SDC: filariasis
Reactive hyperplasia of lymph node Histopathology of a reactive lymph node by the cystic duct in a case of cholecystitis. Category: Reactive hyperplasia of lymph node  checkY
Diffuse B-cell lymphoma Lymph node FNA specimen showing diffuse large B cell lymphoma. Category: Histopathology of diffuse large B cell lymphoma   checkY
Follicular lymphoma Micrograph showing a small B-cell lymphoma compatible with follicular lymphoma. H&E stain. Category: Histopathology of follicular lymphoma checkY
Hodgkin's lymphoma Micrograph of a lymph node in Hodgkin's lymphoma with the characteristic Reed-Sternberg cell. RS cell is a large cell with abundant amophophilic cytoplasm and binucleate mirror image nuclei. Each nucleus contains an acidophilic nucleolus surrounded by a halo. Category: Histopathology of Hodgkin's lymphoma    checkY
Congestive hepatopathy (CVC liver) Micrograph showing chronic venous congestion of liver Category: Histopathology of chronic venous congestion of liver  checkY
Chronic venous congestion of spleen Micrograph showing chronic venous congestion of spleen. Sinusoids are dialated. Organized foci of old hemorrhage seen as areas of fibrosis containing brown pigment (hemosiderin). Category: Histopathology of chronic venous congestion of spleen  checkY
Cavernous hemangioma Histopathological image reprsenting a cavernous hemangioma of the liver. Category: Histopathology of cavernous liver hemangioma  checkY
Atherosclerosis Atherosclerosis showing extracellular lipid accumulation and foam cells. Category: Histopathology of atherosclerosis  checkY
Emphysema Micrograph of empysema lung showing dialated, large alveoli separated by thin septa. Some septae are ruptured and appear to be floating in the alveloar spaces. Grossly emphysematous lung appears pale and voluminous. Category: Histopathology of pulmonary emphysema  checkY
Squamous cell carcinoma of lung Micrograph of squamous Cell Carcinoma Lung. A lobule of polygonal squamous cells with moderate amount of eosinophilic cytoplasm and hyperchromatic nuclei are seen. The islands show abnormal keratinization in the form of epithelial pearls in the centre. These epithelial pearls are whorls or eddies of malignant cells with pink keratin in the centre. Category: Histopathology of squamous cell carcinoma of the lung  checkY
Bronchio-alveolar carcinoma Lepidic pattern of growth of tumor cells along the alveolar wall resembling butterfly sitting on fence. Normal alveoli is seen towards right side. Category: Histopathology of bronchio-alveolar carcinoma  checkY
Tuberculosis of lung Pulmonary tuberculosis characterized by granulomatous inflammation with necrotizing epithelioid granulomas. Category: Histopathology of pulmonary tuberculosis   checkY
Aspergilloma of lung This ectatic bronchus is filled with a colony of Aspergillus. The organisms are confined to the lumen of the bronchus and do not invade surrounding tissues. Category: Histopathology of pulmonary aspergilloma  checkY
Small cell carcinoma of lung Micograph of small Cell Carcinoma Lung. The tumor appears blue because the malignant epithelial cells are small with scanty cytoplasm, nuclei shows finely granulated chromatin. Cells are seen in clusters. There is nuclear overlapping with moulding and crushing. Category: Histopathology of small cell lung cancer  checkY
Pneumonia Lung tissue showing numerous neutrophils with minimal exudates in the alveolar space with septal wall congestion. Category: Histopathology of pneumonia  checkY
Aspiration pneumonia Lung tissue where alveoli contain hemosiderin-laden macrophages and occasional multinucleate giant cells as well as red blood cells. Category: Histopathology of aspiration pneumonia checkY
Adenocarcinoma colon Micrograph of carcinoma colon showing malignant glands.Nuclei are small and vesicular, located at the bottom of the cell. The cells show increased nucleocytoplasmic ratio. Category: Histopathology of colorectal adenocarcinoma  checkY
Chronic gastric ulcer Acute stress ulcer of stomach in erosive gastritis. Category: Histopathology of gastritis   checkY
Adenocarcinoma stomach Micrograph of carcinoma stomach. The glands are seen infiltrating the muscle layer. The neoplastic cells are arranged in cords and in glandular pattern. The cells show dysplastic features. Signet rings with nucleus pushed to the periphery are seen in some types of adenocarcinoma. Category: Histopathology of adenocarcinoma stomach  checkY
Squamous cell carcinoma (well-differentiated) Well-differentiated squamous cell carcinoma skin showing malignant cells with mild atypia resembling normal squamous epithelial cells with intercellular bridges, individual cell keratinisation and nests of keratin pearls. Category: Histopathology of squamous cell carcinoma of the skin   checkY
Pleomorphic adenoma Micrograph of Pleomorphic Adenoma of Salivary gland. The section shows a cellular area interspersed with islands of lighter stained bluish myxoid tissue. The cellular area is the epithelial element and is composed of cells arranged in sheets and trabeculae. The myxoid areas may resemble cartilage and represent the mesenchymal element. Category: Histopathology of pleomorphic adenoma  checkY
Cirrhosis of liver Micrograph of liver showing nodules of parenchymal liver cells engulfed by broad bands of fibrous tissue. The liver has lost its normal architecture. Category: Histopathology of alcoholic cirrhosis  checkY
Fatty liver Hepatic parenchymal cell cytoplasm containing clear vacuoles containing fat of varying sizes, displacing the nucleus towards the periphery. Category: Lipid steatosis  checkY SDC: steatosis
Serous cystadenoma Histopathology of serous cystadenoma, with admixed scattered ciliated cells. This case closely resembles normal surface endometrial epithelium of the uterus Category: Histopathology of ovarian serous cystadenoma  checkY
Mucinous cystadenoma Micrograph showing Mucinous Cystadenoma of ovary. The cyst wall is lined by tall columnar epithelium and filled with mucin. Category: Histopathology of mucinous cystadenoma  checkY
Dysgerminoma Dysgerminoma characterized by uniform cells resembling primordial germ cells separated by fibrous septa with lymphocytes. Category: Histopathology of ovarian dysgerminoma  checkY
Vesicular mole Micrograph of vesicular mole showing oedematous chorionic villus with circumferential proliferation of trophoblasts. Category: Histopathology of chorionic villi  checkY SDC: chorionic villi
Products of gestation Micrograph showing products of conception. Chorionic villi and decidual tissue are seen. Category: Histopathology of products of conception  checkY SDC: products of conception
Benign cystic teratoma Micrograph of Teratoma Ovary showing areas of cartilage, mucous glands, squamous epithelium and hair follicle. Category: Histopathology of mature teratoma of ovary  checkY
Seminoma testis Micrograph of seminoma testes showing lobules of uniform cells separated by delicate septae of fibrous tissue. These cells can have a distinct outline with clear cytoplasm. The nuclei are large, with central prominent nucleolus. Category: Histopathology of testicular seminoma   checkY
Endometrium Micrograph showing proliferative phase of endometrium. Category: Histology of endometrium  checkY
Leiomyoma uterus Micrograph of leiomyoma uterus showing bundles of smooth muscle cells of uniform size and shape. The cells are spindle shaped with oval nucleus. Category: Histopathology of uterine fibroids  checkY SDC: Leiomyoma
Squamous cell carcinoma of cervix Invasive Squamous Carcinoma of the Cervix. Cold Knife Cone. Category: Histopathology of squamous cell carcinoma of the cervix  checkY
Cystic hyperplasia of endometrium Micrograph showing cystic hyperplasia of endometrium. Cystically dialated glands are lined by proliferative type of epithelium. Stroma also resembles proliferative phase. No atypia is seen in the cells.  Category: Histopathology of hyperplasia endometrium checkY
Neuroblastoma Histopathology specimen of neuroblastoma showing Homer Wright rosettes (HE stain) Category: Histopathology of neuroblastoma  checkY
Nephroblastoma Adult Wilm's tumor showing tubular pattern resembling pseudo-rosettes at places.  Category: Histopathology of Wilm's tumor checkY
Retinoblastoma This retinoblastoma has characteristic Flexner-Wintersteiner rosettes with circular alignment of short columnar cells around a central lumen. Category: Histopathology of retinoblastoma  checkY
Osteoclastoma The micrographs show the characteristic giant cells with nuclei that have a similar appearance to the surrounding (mononuclear) cells. Category: Histopathology of giant cell tumor of bone  checkY
Osteosarcoma Small cell osteosarcoma, like other osteosarcomas has osteoid, the extracellular organic component of bone. On H&E stained sections, osteoid has a pink, homogeneous appearance and surrounds osteoblasts or osteosarcoma cells.  Category: Histopathology of osteosarcoma checkY
Plasmacytoma Plasma cell showing eccentrically placed round nucleus with cart wheel like chromatin.  Category: Histopathology of plasmacytoma checkY
Osteochondroma Perichondrium covering the cartilage cap, which merged into the underlying spongiosa. Category: Histopathology of osteochondroma  checkY
Hashimoto's thyroiditis Hashimoto's thyroiditis with lymphoid infiltration. Category: Hashimoto's thyroiditis with lymphoid infiltration  checkY
Papillary carcinoma thyroid The phenomenon of orphan Anne eyes in papillary thyroid cancer. Category: Histopathology of thyroid papillary carcinoma  checkY SDC: papillary carcinoma
Nodular colloid goitre Histopathology of multinodular toxic goiter, showing normal thyroid follicles with calcification but no psammoma bodies in low magnification and no atypia in higher magnification. Category: Histopathology of goitres  checkY SDC: goiter
Glioblastoma Biopsy specimen of a Glioblastoma showing extensive cell pleomorphism Category: Histopathology of glioblastoma  checkY
Meningoma Concentrically calcified basophilic structure in the centre of the field in a meningioma. Category: Histopathology of meningoma  checkY
Fibrocystic disease of breast Intermediate magnification micrograph of fibrocystic change of the breast with apocrine metaplasia.  Category: Histopathology of fibrocystic breast changes checkY
Infiltrative ductal carcinoma Atypical cells with moderate amount of eosinophilic cytoplasm and round to oval dark nucleus with moderate pleomorphism (Papanicolaou, 400X) Category: Histopathology of invasive carcinoma of no special type   checkY SDC: invasive breast carcinoma
Fibroadenoma A well circumscribed lesion showing proliferation of intralobular stroma compressing and distorting the epithelium. Category: Histopathology of breast fibroadenomas  checkY
Phyllodes tumor Photomicrograph of a malignant phyllodes tumour. Note stromal cellularity and mitotic figures.  Category: Histopathology of cystosarcoma phyllodes checkY
Lipoma Micrograph of a lipoma showing fat cells.  Category: Histopathology of lipomas checkY
Basal cell carcinoma Surgical excision biopsy specimen showing histopathology of basal cell carcinoma. Category: Histopathology of basal cell carcinoma  checkY
Malignant melanoma Malignant spindle cell neoplasm, showing numerous mitotic figures, including atypical tripolar mitotic figure, in the centre.  Category: Histopathology of melanoma checkY
Squamous papilloma Micrograph showing squamous cell papilloma of the tongue. Category: Histopathology of squamous cell carcinoma  checkY
Renal cell carcinoma Micrograph of clear cell renal cell carcinoma showing cells with clear cytoplasm, typically arranged in nests and nuclear atypia. Category: Histopathology of renal cell carcinoma  checkY
Cresenteric glomerulonephritis Photomicrograph of the renal biopsy showing prominent fibrocellular crescent formation and moderate mesangial proliferation in a glomerulus. Category: Histopathology of glomerulonephritis  checkY SDC: glomerulonephritis
Transitional cell carcinoma Histopathology of transitional carcinoma of the urinary bladder. Category: Histopathology of transitional cell carcinoma  checkY
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