Barrett esophagus is characterized by the replacement of squamous mucosa in the esophagus by specialized intestinal metaplasia. Its clinical significance lies in it being the strongest risk factor for and known precursor for esophageal adenocarcinoma. Diagnosis requires endoscopic confirmation of columnar metaplasia in the distal esophagus and histologic confirmation of specialized intestinal m...

Background and Objectives: External dacryocystorhinostomy (DCR) is the method of choice to treat nasolacrimal duct (NLD) obstruction and the other approaches are compared with it, with a failure rate of 4% to 13%. The current study aimed to assess the causes of failure in external DCR by postoperative endoscopic and pathological evaluation. <stro...

BACKGROUND Colorectal cancer (CRC) is the third most commonly diagnosed cancer in males and the second in females, with an estimated 1.4 million cases and 693,900 deaths in 2012. Colonoscopy is the cornerstone for the detection and prevention of CRC. In addition, endoscopic treatment for CRC at an early stage can effectively improve patients' quality of life and cure rate. SUMMARY This review...

In recent years, endoscopic therapy of early Bar− rett’s esophagus neoplasia has become a safe and effective alternative to esophagectomy [1 ± 4]. Only patients with high−grade intraepithelial neoplasia (HGIN) or mucosal cancer are eligible for curative endoscopic treatment. Lesions that invade the submucosa are associated with a sig− nificant risk of lymph node metastases and are therefore pre...

Objective. To determine the efficacy of sinonasal evaluation preceding hematopoietic cell transplant (HCT) and to correlate pretransplant findings with subsequent risk of post-HCT complications based on radiographic, endoscopic, and microbiologic findings. Study Design. Case series with chart review. Setting. Academic tertiary care center. Subjects and Methods. Seventy-one patients underwent pr...

juvenile nasopharyngeal angiofibroma (jna) is a rare, benign and locally invasive tumor. massive bleeding because of vascularity of tumor and postoperative recurrence are potential problems of management. endonasal approach reduces the rate of postoperative recurrence, intraoperative bleeding, and complications of surgery, time of operation and duration of hospitalization. in this article, we r...

Dacryocystorhinostomy allows by-passing saccal and post-saccal stenoses and has traditionally been performed via an external approach, namely, external dacryocystorhinostomy. Over the past two decades, advances in endoscopic equipment have led to the widespread use of the endoscopic transnasal approach to the lacrimal pathway. A retrospective evaluation has been made of personal success rates i...