PURPOSE Stereotactic radiosurgery (SRS) is widely used for brain metastases but has been relatively contraindicated for large lesions (>3 cm). In the present study, we analyzed the efficacy and toxicity of hypofractionated Gamma Knife radiosurgery to treat metastatic brain tumors for which surgical resection were not considered as the primary treatment option. METHODS AND MATERIALS Thirty-six...

BACKGROUND AND OBJECTIVE To determine whether 6.45-microm free electron laser (FEL) energy can successfully perform optic nerve sheath fenestration and to compare the acute and chronic cellular responses with this surgery. STUDY DESIGN/MATERIALS AND METHODS Optic nerve sheath fenestration was performed in rabbits by using either FEL energy (< 2.5 mJ, 10 Hz, 325-microm spot size) or a knife. T...

AIM OF THE STUDY One of the alternative methods of surgical treatment of vestibular schwannoma is Gamma Knife radiosurgery. The purpose of this metaanalysis was to analyze the progress in treatment of vestibular schwannoma using Gamma Knife radiosurgery based on data in the literature of the last five years. MATERIAL AND METHODS In the collected English-language literature from the years 2007...

A 45-year-old man with Crohn’s disease diagnosed in 1988 who had undergone an ileocecal resection with an end-to-side anastomosis in 1995 presented with pain in the right lower abdomen. A colonoscopy was performed using an Olympus colonoscope (Tokyo, Japan), during which a noninflamed fibrotic stricture of the anastomosis that could not be passed by the endoscope was found (●" Fig.1). Because t...

Background: Intralabyrinthine schwannoma are rare benign tumors exclusively managed to date with observation or surgical removal. We analyze results of radiosurgical treatment of these lesions. Methods: Retrospective analysis of medical data of 454 patients with vestibular schwannomas treated by Gamma Knife in our center was performed. We identify 12 patients treated for a schwannoma located pa...

OBJECTIVE To compare the results of cold knife conization (CKC) and loop electrosurgical excision procedure (LEEP) for cervical intraepithelial neoplasia to determine if excisional method has effects on pathologic interpretation. METHODS Retrospective review of the perioperative medical records of patients who had a CKC and electrosurgical loop excision of cervix. Patients selected had either...

BACKGROUND AND OBJECTIVES The Amide II wavelength (6.45 microm) produced by the free electron laser (FEL) can efficiently create an optic nerve sheath fenestration in rabbits. We wished to determine if it would be equally successful in macaque monkeys and to determine the histopathologic changes between traditional scissors or knife optic nerve sheath fenestration to FEL fenestration. STUDY D...

BACKGROUND Surgical removal of jugular foramen (JF) neurinomas remains controversial because of their radicality in relation to periosteal sheath structures. OBJECTIVE To clarify the particular meningeal structures of the JF with the aim of helping to eliminate surgical complications of the lower cranial nerves (LCNs). METHODS We sectioned 6 JFs and examined histological sections using Mass...

AIM To investigate the current management of gastric antral webs (GAWs) among adults and identify optimal endoscopic and/or surgical management for these patients. METHODS We reviewed our endoscopy database seeking to identify patients in whom a GAW was visualized among 24640 esophagogastroduodenoscopies (EGD) over a seven-year period (2006-2013) at a single tertiary care center. The diagnosi...