Improving the radiological prediction of surgical resection of nonfunctioning pituitary adenomas.

Purpose: Nonfunctioning pituitary adenomas (NFPAs) are benign tumors growing in the sellar region. Total surgical excision of the lesion is recommended as the preferred treatment choice with preservation of adjacent structures. The objective is to establish a radiological score to predict the feasibility of NFPA total surgical excision.

Diffusion-weighted imaging does not seem to be a predictor of consistency in pituitary adenomas.

Purpose: To prospectively evaluate the usefulness of T1-weighted imaging (T1WI) and diffusion-weighted imaging (DWI) sequences in predicting the consistency of macroadenomas. In addition, to determine their values ​​as prognostic factors of surgical outcomes.

Methods: Patients with pituitary macroadenoma and surgical indication were included.

Case report: Regression of Glioblastoma after flavivirus infection.

Glioblastoma is the most frequent and aggressive primary brain cancer. In preclinical studies, Zika virus, a flavivirus that triggers the death of glioblastoma stem-like cells. However, the flavivirus oncolytic activity has not been demonstrated in human patients.

Endoscopic Endonasal Resection of Schwannoma of Pterygopalatine Fossa.

Trigeminal schwannomas are benign slow-growing tumors originating from the peripheral nerve sheath. They account for 0.1%-0.

Collision sellar lesions: coexistence of pituitary adenoma and Rathke cleft cyst-a single-center experience.

Purpose: Collision sellar lesions represent the coexistence of distinct histopathological lesions found in the sella turcica. They are uncommon entities and have mainly been reported as pituitary adenoma (PA) associated to Rathke cleft cyst (RCC). Pre- and perioperative diagnosis is difficult, since most of the cases appear clinically, radiologically, and macroscopically as solitary cystic sellar lesion.

Predictors of surgical outcome and early criteria of remission in acromegaly.

Background: Transsphenoidal surgery (TSS) is the cornerstone of acromegaly treatment, however there are no robust predictors of surgical outcome and remission can only be defined three months after surgery.

Purpose: To analyze if biochemical, demographical, radiological, and immunohistochemical characteristics are predictors of surgical remission and investigate if immediate postoperative GH and IGF-I levels can help defining remission earlier.

Methods: Consecutive acromegaly patients submitted to TSS between 2013-2016 were evaluated.

Trigeminal Neuralgia due to Vertebrobasilar Dolichoectasia.

We presented a case of drug-resistant trigeminal neuralgia attributed to vertebrobasilar dolichoectasia, a rare condition characterized by enlargement, tortuosity, or elongation of intracranial arteries. Dolichoectatic vessels can cause dysfunction of cranial nerves through direct vascular compression. The relationships of vertebrobasilar dolichoectasia with the particularities of neurovascular conflict and images findings are discussed.