Evaluation of the immunohistochemical stain patterns of survivin, Bak and Bag-1 in colorectal cancers and comparison with polyps situated in the colon.

Background/aims: Colorectal cancer is one of the most common cancers worldwide. The adenoma-carcinoma sequence in colorectal cancer has been documented approximately; however, several series of molecular mechanisms still require elucidation.

Methodology: Fifteen colonoscopic biopsy and 25 colectomy colorectal cancer samples, 12 hyperplastic colon polyps, and 18 tubular and 19 villous adenoma cases were studied.

Cholesterol granuloma of the maxillary sinus.

Cholesterol granuloma is usually associated with middle ear disease and is very rare in the paranasal sinuses. We report a case of cholesterol granuloma originating in the maxillary sinus of a 36-year-old female. Endoscopic sinus surgery was performed on the left maxillary, sinus, and the cholesterol granuloma was successfully removed by the middle meatal antrostomy.

Gastric pseudolipomatosis, usual or unusual? Re-evaluation of 909 endoscopic gastric biopsies.

Microvesicular pneumatosis intestinalis, also called "pseudolipomatosis" for resembling fatty infiltration, is characterized by the presence of small gas voids in the gastrointestinal wall, especially in mucosa. These voids are not lined with epithelia. There are few reported cases about colon, duodenum and skin.