Mucinous adenocarcinoma of lung presenting as oral metastases: a case report and literature review.

Background: Metastasis of a malignant tumor to the oral cavity is rare and can indicate an unknown primary tumor.

Methods: Described is a case of metastatic tumor in the right jaw. The patient was a 50-year-old woman who consulted her dentist with complaints of tooth pain and an abscess.

Incidental colonic fluorodeoxyglucose uptake: correlation with colonoscopic and histopathologic findings.

Purpose: To evaluate the pattern and degree of incidental colonic fluorodeoxyglucose (FDG) uptake in patients without colorectal carcinoma who underwent whole-body FDG positron emission tomography (PET) for other purposes and compare them with colonoscopic and/or histopathologic findings.

Materials And Methods: Cases of 27 patients without known history of colorectal carcinoma who were referred for evaluation with whole-body FDG PET and displayed incidental colonic uptake were reviewed retrospectively. Colonoscopy was performed in 10 patients; histopathologic analysis, in two; and both, in 15.

Repeated bleeding scintigraphy may reveal that stationary foci of activity represent sites of active hemorrhage.

The goal of bleeding scintigraphy is to localize the site of origin of a hemorrhage to within general regions of the large or small bowel. Activity is typically seen to extravasate from the blood pool into the lumen, and the collection of activity then moves on sequential images, as a result of the cathartic action of blood. Sometimes, bleeding studies show a stationary focus of activity without subsequent movement.