Detection of flat neoplasia is a major challenge in colorectal cancer screening, as missed lesions can lead to the development of an unexpected 'incident' cancer prior to the subsequent endoscopy. The use of a tryptophan-related autofluorescence has been reported to be increased in murine intestinal dysplasia. The emission spectra of cells isolated from human adenocarcinoma and normal mucosa of...

Spindle cell neoplasms are defined as neoplasms that consist of spindle-shaped cells in the histopathology. Spindle cell neoplasms can affect the oral cavity. In the oral cavity, the origin of the spindle cell neoplasms may be traced to epithelial, mesenchymal and odontogenic components. This article aims to review the spindle cell neoplasms of the oral cavity with emphasis on histopathology. ...

Gastrocolonic malignant fistulas can occur, although rarely, complicating gastric or colonic neoplasms. En bloc resection of the fistulous tract and involved segments is the first-line treatment whenever possible, with endoscopic treatment an alternative. Endoscopic closure has been described using covered stents [1, 2], over-the-scope clips [3], and atrial septal defect occlusion devices [4]. ...

colonic lipoma is a benign neoplasm that can lead to colonic obstruction but concomitant intussusception is rare in adults. in this case, colocolic intussusception due to a lipoma in the descending colon had occurred. by laparatomy, we diagnosed the problem , but reduction was impossible . so resection of the colon with mass was done and anastomosed. after surgery and 3 years follow up the pati...