The recent advances in endoscopic imaging technologies make great changes in the management of colorectal polyps. These changes include optical histologic diagnosis with high definition colonscopy, new management strategies such as resect and discard or do not resect, and differentiation of depth of submucosal invasion. In this focused review series, these new paradigms in management of colorec...

Ampullary neoplasms are one of the causes of obstructive jaundice. Endoscopic retrograde cholangiopancreatography (ERCP) is useful procedure for diagnosing and tissue sampling of ampullary neoplasms. Ampullectomy by resecting entire ampulla provides whole lesion for pathologic evaluation and also is appropriate for real pathologic staging for further management decision but ampullectomy conside...

Sinonasal teratocarcinosarcoma (STCS) is a rare, morphologically heterogeneous and highly aggressive tumour of ambiguous origin. It is characterized by the presence of benign and malignant epithelial, mesenchymal and neuroectodermal components. Because of their rarity and heterogeneity, these lesions are often misdiagnosed, leading to management difficulties. Adequate sampling with a high index...

gastric varices (gv) are responsible for 10-30% of all variceal  hemorrhage. however, they tend to bleed more severely with higher mortality. around 35-90% rebleed after spontaneous hemostasis. approximately 50% of patients with cirrhosis of liver harbor  gastroesophageal varices. in this review, new treatment modalities in the form of endoscopic treatment options and interventional radiologica...

Prevention is essential for avoiding the complications of muscle hematomas (pseudotumors, compartment syndromesand peripheral nerve lesions) in hemophilic patients. This is achieved through early diagnosis of muscle hematomasand proper long-term hematological treatment until they have resolved (confirmed by image studies). Ultrasound-guidedpercutaneous drainage could be benefi...