Skull base chondrosarcomas are rare and account for approximately 0.15% of all intracranial tumors. Management of these tumors is challenging because of their potential to recur, and their proximity to vital structures such as major vessels and cranial nerves. We describe five patients with chondrosarcoma of the skull base who were managed at our institute between January 2002 and December

Objective: To discuss the endoscopic findings of endoscopic surgery and the results of surgery implemented for posterior ankle bony impingement, including cases of elderly patients. Methods: The patients consisted of 5 males and 12 females. The mean age at surgery was 27.2 years old, and the mean duration of follow-up was 35.2 months. They included 5 ballet dancers, 3 baseball players, 2 badmin...

INTRODUCTION Modified endoscopic approaches allow for complete excision of maxillary keratocystic odontogenic tumors (KCOTs), with significantly decreased morbidity compared to open approaches. Formerly odontogenic keratocysts, KCOTs were reclassified by the World Health Organization in 2005 due to their aggressive and locally destructive nature. These tumors arise from the dental lamina or bas...

Leiomyosarcoma of the colon is a rare tumor (330 reported cases [1]) which can mimic an adenocarcinoma [2]. Contrastenhanced computed tomography (CT) is the imaging method of choice in the diagnostic work-up, though magnetic resonance imaging may be useful. Endoscopy and endoscopic ultrasonography (EUS) are also useful for further characterizing the lesion, and are helpful in distinguishing a b...

Large (>2.5 cm) rectal laterally spreading tumors (LSTs) are often managed endoscopically with piecemeal endoscopic mucosal resection technique (pEMR). However, the mean recurrence rate after pEMR is 20% [1]. Furthermore, rectal LST-mixed granular type lesions (0-Is+IIa) demonstrate deep submucosal cancerous infiltration in 10.1% of cases [2]. Endoscopic submucosal dissection (ESD) is an endosc...