[Tumour regression in pituitary adenoma by bromocriptin (author's transl)].

A 35 year old patient with longstanding amenorrhea-galactorrhea due to a pituitary macroadenoma has been observed for a period of more than 2 years. During this time tumour expansion was radiologically evident. A full term pregnancy was responsible for most of the tumour growth. Following postpartum period Bromocriptin treatment led to considerable regression of the adenoma. Recalcification of sella structures and an involuted sella volume was radiologically evident. With reference to the experimental investigations of Lloyd (1975) and following the suggestions of L'Hermite (1977) and Vaidya (1977) this tumour regression is interpreted as being due to the antimitotic effect of Bromocriptin via inhibition of c-AMP and DNA.