9091/1 Struma ovarii and carcinoid

Related terms

Strumal carcinoid


ICD-O-3 topography code: C56

An ovarian neoplasm characterized by the presence of aberrant thyroid tissue and a carcinoid tumor. The neuroendocrine carcinoid cells infiltrate the aberrant thyroid tissue and progressively replace the follicular lining cells. A minority of patients develop symptoms of functioning thyroid tissue.