Minimally invasive pituitary surgery in a hemorrhagic necrosis of adenoma during pregnancy.

A 29-year-old woman with a prolactin microadenoma was under good control with bromocriptine (BCP) therapy until she became pregnant, when the treatment was stopped. During the third trimester of pregnancy the patient presented a unilateral visual loss and intermittent headaches. BCP was restarted and one week later she developed a complete ophthalmoplegia on the other side. The patient was submitted to an endoscopic transnasal transeptal resection of a hematoma and tumoral tissue in the pituitary region. One month after surgery, at 39 weeks of gestation, the patient spontaneously delivered a healthy girl weighing 3 kg, with an Apgar score of 9 and 10 at five minutes. This is the first case in the literature of a pregnant woman with second and third cranial nerve lesions, submitted to minimally invasive neuroendoscopic transnasal transsphenoidal approach in the third trimester of pregnancy.

[Pituitary adenomas: relationship between invasiveness and proliferative cell nuclear index]. / Adenomas hipofisários: relação entre invasividade e índice proliferativo tumoral.

We evaluated clinically, radiologically and surgically a series of 76 pituitary adenomas. All cases were assessed immunohistochemically and in 49 patients the PCNA monoclonal antibody was measured. The most frequent types found were the bihormonal adenomas, followed by prolactinomas and non secreting adenomas. The bihormonal adenomas, non secreting adenonas and the sub unit alfa producing adenomas were proportionally more invase as determined by radiological criteria (CTscan or MRI). In 59 patients a transphenoidal approach was used, six cases were operated on transcranially and in 11 patients we used a combination of both approach. Total resection were achieved in 32 cases, most of which were microadenomas, in 15 cases the resection was subtotal and partial in 29 cases. Diabetes insipidus was the most frequent endocrine complication. It was observed that secreting adenomas tend to be associated with an increased PCNA and invasive adenomas correlated with PCNA 3 and 4. An improvement in vision was observed in 85% of macroadenomas seen after a total, subtotal or partial resection.

Malignant melanoma of the cerebello-pontine angle region.

A case of malignant melanoma in the cerebello-pontine angle region is presented in a 72 year old female patient, who had neurological examination and CT scan suggestive of acoustic neuroma. The surgical finding and the histological examination provided the diagnosis. As a primary focus was not found on clinical examination and although autopsy was not carried out, there is a possibility of the diagnosis being a primary malignant melanoma in CNS. This specific location for this kind of tumor was found to be rare when literature is looked up.