title: [Malignant ovarian struma].
abstract: A rare observation of an unilateral ovarian tumour in a 62-year-old patient is presented. According to the clinical data and the results of the ultrasound examination the tumour was considered as a carcinoma. Hysterectomy with appendages and large omentum resection were performed. A tumour of the right ovary, 13 x 10 x 10 cm was found: cyst with a grey-brown soft node was observed in the cut surface. Histologically, the struma remnants were observed in the cyst wall and structures corresponding to the follicular carcinoma of the thyroid, the central parts of which had a structure of the C-cell thyroid carcinoma. Ultrastructural examination confirmed a light microscopic diagnosis of the malignant monodermal ovarian teratoma developing from the struma with areas of follicular solid C-cell carcinoma.
authors.forename: V D
authors.initials: VD
authors.lastname: Ermilova
authors.forename: E A
authors.initials: EA
authors.lastname: Smirnova
authors.forename: V V
authors.initials: VV
authors.lastname: Barinov
mesh_terms: D005260:Female; D006801:Humans; D008854:Microscopy, Electron; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000473:pathology*; D010053:Ovary / Q000473:pathology; D013330:Struma Ovarii / Q000473:pathology*; D014599:Uterus / Q000473:pathology
vernacular_title: Ozlokachestvennaia struma iaichnika.