Soner Duru

Epidermoid cyst of the brain stem. Case report

Brain stem epidermoid cysts are extremely rare lesions. Only nine cases have been reported. Management of the epidermoid cyst is decompression of cyst contents and removal of cyst capsule. But in some cases resection of the cyst may result in a poor outcome because of cyst wall adhesion into the brain stem.

Reconstruction of the middle cerebral artery after excision of a giant fusiform aneurysm

A patient with a giant fusiform aneurysm of the left inferior trunkus of the middle cerebral artery (MCA) is presented. The size of the aneurysm was 5 cm at its largest diameter. Retrograde flow was well developed. After the application of temporary clips the aneurysm was excised and microsurgical reconstructions were undertaken. Adequate flow in the reconstructed MCA trunkus was maintained. This rare case is discussed in the light of the literature.

Giant cell tumor of the fronto-parietal bone. A case report

Giant cell tumor of the skull is very rare clinical entity. This paper presents a case of giant cell tumor of the fronto-parietal bone and a brief review of the literature.

Solitary plasmacytoma of the skull. A case report

A case of solitary plasmacytoma of the skull is presented. The tumor was radically removed. There was no systemic involvement and the patient was not submitted to radiotherapy. Lytic lesions of the skull are discussed.

Effects of nerve growth factor on acetylcholinesterase activity of the proximal stump of the transected sciatic nerve

Abstract28 rats were studied. They were divided into four groups of 7 rats of each: one-day control animals (Group A), sevenday control animals (Group B), one-day nerve growth factor (NGF)-treated animals (Group C) and seven-day NGF-treated animals (Group D). In all animals, the right sciatic nerve was explored and completely transected using microscissors under a microscope. In NGF-treated animals, NGF (0.1 mg/kg NGF) was injected subcutaneously. In control animals, there was a statistically significant decrease in AChE activity in the proximal stump of the transected sciatic nerve at 7-day measurements (p < 0.05). In the NGF-treated groups, mean AChE activity in the proximal stump of the transected sciatic nerve was decreased at the 7-day measurement. AChE activity difference between control and NGF-treated groups, measured on the 7th day, are statistically significant (p < 0.01). These results demonstrate the effect of NGF on the cholinergic system.

Epidermoid tumor of the occipital bone

Intradiploic epidermoid-tumor of the occipital bone was presented. There were neither intracranial extensions nor neurologic deficits. The lesion started as a painless mass under the scalp.The total removal of the tumor was associated with a good prognosis.