Pituitary adenoma and parasellar cysts

Two cases of pituitary adenoma associated with a parasellar cyst are reported; only one similar case has been described previously. Even though such an association may be coincidental, a pathogenetic relationship between the two lesions in one of our cases may be assumed: shrinkage of the prolactin-secreting pituitary adenoma by means of bromocriptine therapy did, in fact, cause collapse of the cyst. Such an occurrence must not be disregarded in considering the therapeutic approach.