Attacks of flushing and cyanosis occur in which type of ovarian tumors:

Carcinoid tumour of Ovary: • It is sometimes primary and sometimes metastatic. • Also called Argentaffinoma. • Occurs as a malignant change in benign dermoid cyst. • Presence of solid yellow tumour with histological property of reducing silver salts derived from specialized Kulchitsky cells of intestine. • It produced 5 - HT which causes attacks of flushing and cyanosis.