Two cases of tailgut cysts are reported. These lesions are rare and congenital, lying anterior to the sacrum and posterior to the rectum. CT findings are described. For one patient MR evidence is also presented. In a second case, the mass showed malignant behavior with local recurrence.

We report on three patients with large lipomas in the wall of the cecum, causing intussusception. Endoscopy is the preferred modality for small lipomas, whereas CT and MR imaging are more useful in their ability in detecting fatty masses and assessing the location of lesions. Barium enema study may contribute to the preoperative planning in selected cases.

Ultrasound and CT were effective in the evaluation of "cubital bursitis", but with some diagnostic difficulties. MR imaging is probably the method of choice for determining both the development of the bursae and their fluid content.

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