Arachnoid cyst with extraordinary extracranial extension in the skull base as a result of an iatrogenic defect of the middle cranial fossa floor: case report and literature review.

Arachnoid cysts are benign intracranial lesions that are typically diagnosed incidentally. They are divided into two types: congenital and acquired. Acquired arachnoid cysts are rare and usually arise after trauma, infection, or haemorrhage.

Stentgraft-implantation for treatment of internal carotid artery injury during endonasal sinus surgery.

Background: Damage of the internal carotid artery (ICA) is very rare but can be a dramatic complication of endonasal sinus surgery. In the literature only a few cases are reported, some of them with fatal results.

Methods: We present two cases with massive bleeding of the ICA caused by endonasal sinus surgery.

[Prediction of pharmacological effect of octreotide in acromegaly by means of 111In-pentetreotide scintigraphy and calculation of a pituitary uptake index].

Aim: The aim of our prospective study was to optimize the determination of the pituitary somatostatin receptor status by means of 111-In-pentetreotide scintigraphy and to compare it intraindividually with the pharmacological effect of octreotide in active acromegaly.

Methods: In n = 22 patients with growth hormone (GH) secreting pituitary adenoma, 111-In-pentetreotide scintigraphy was performed, and the specific radionuclide accumulation in the pituitary area (evaluation visually as well as semiquantitatively by means of ROI technique and calculation of various uptake indices) was correlated with the acute drop of GH after administration of 100 micrograms octreotide s. c.

[Hyperthyroidism in TSH-producing hypophyseal adenoma].

History And Clinical Findings: For 5 years a 59-year-old man had been treated with thyrostatic drugs for hyperthyroidism of unknown aetiology. As he had been losing weight, computed tomography had been performed in the search for a malignancy. It revealed a hypophyseal space-occupying lesion.