Variable sonographic spectrum of parathyroid adenoma with a novel ultrasound finding: dual concentric echo sign.

Aims: To review the detailed gray-scale and Doppler ultrasonography features of histologically proven parathyroid adenomas (PAs) evaluated with high-end ultrasonography devices and to present a novel ultrasonography finding called the dual concentric echo sign in PA with histopathologic correlation which was encountered during detailed analysis.

Material And Methods: Fifty-six PAs with histopathological result were enrolled. The longest dimension, shape, distance to skin surface, internal echo and Doppler US features obtained with high-end US devices were evaluated.

Celiac disease associated with B-cell lymphoma.

Celiac disease is a gluten-induced enteropathy controlled by gluten restriction. Celiac disease is occasionally associated with T-cell lymphoma. We report a case with celiac disease who presented with duodenal ulcer-like symptoms and endoscopic findings.

Colonic malignant melanoma, primary or metastatic? Case report.

Gastrointestinal malignant melanomas, either primary or metastatic, are rare and overlooked tumors. There is also controversy regarding the actual existence of primary melanoma in the gastrointestinal tract apart from the esophagus and anorectal regions, where melanocytes normally exist. A case of malignant melanoma in the cecum is presented.

Benign fibroblastic polyp of the colon: a case report.

There are a fair number of polyps in the gastrointestinal tract, which cannot be classified under a certain category. We report herein a 50-year-old man with a 6-mm sigmoidal polyp; he had been operated previously for rectal carcinoma. The polyp was characterized by benign-appearing spindle cells in the lamina propria leading to a wide separation and disorganization of the colonic crypts, accompanied by focal erosion and restricted areas suspicious for inflammatory fibroid polyp.