title: Hemangiosarcoma of the thyroid gland. Histological diagnosis problems.
abstract: A bleeding tumor of the thyroid gland in a 69-year-old woman is presented. Histologically, it was a hemangiosarcoma with proliferation and vessel neoformation: vascular-like clefts or distinct capillaries with tumoral endo- and perithelial structures were present. With reference to the published data, problems of differential diagnosis in the undifferentiated and giant cell carcinomas of the thyroid gland are discussed.
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006394:Hemangiosarcoma / Q000098:blood supply / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D009389:Neovascularization, Pathologic / Q000473:pathology*; D013961:Thyroid Gland / Q000098:blood supply / Q000473:pathology*; D013964:Thyroid Neoplasms / Q000098:blood supply / Q000175:diagnosis* / Q000473:pathology