Strumal carcinoid of ovary. A case report with immunohistochemical investigations.

Clinical, histological and immunohistochemical findings in a rare ovarian tumor--strumal carcinoid--are presented. Neuropeptides detected by immunoreactions revealed the origin of tumor cells from the midgut. Immunohistochemical reaction revealed parathyroid hormone-related protein (PTHrp) in the carcinoid cells. After surgical resection of the tumor a decrease in serum calcium level was observed.