Osseous choristoma is the formation of normal mature bone at an abnormal position. These are rare benign tumor-like growth usually asymptomatic except or swelling as clinical presentation. In oral cavity, osseous and commonly found in posterior third tongue. Clinically it misdiagnosed malignancy because its hardness. Clinically, also mistaken for other cavity lesions, especially those minor sal...

The occurrence of heterotopic tissue in the large bowel is relatively rare. The most common type of tissue in such heterotopia is gastric mucosa, but rare cases of pancreatic and salivary tissue are also reported in literature. All cases of salivary choristomas reported in literature arose in the rectum–anal canal region [1–5]. Here we report a submucosal salivary gland choristoma in the sigma ...

Choristomas are small aggregates of normal tissue components in aberrant locations, and may be mistaken for true neoplasms. We report a case of an incidentally found mature cartilage island in the portal tract of a two-month old piglet. All other examined organs were normal. The pig belonged to the control group of animals in a short-term experiment, was fed with wheat and corn, and did not rec...

An oral foregut cyst is a rare congenital choristoma lined by the respiratory and/or gastrointestinal epithelium. The exact etiology has not been fully identified, but it is thought to arise from misplaced primitive foregut. This lesion develops asymptomatically but sometimes causes difficulty in swallowing and pronunciation depending on its size. Thus, the first choice of treatment is surgical...