Germ cell tumors predominantly involve the gonads but may rarely be found outside of the gonads, primarily in midline structures. We describe the case of a 27-year-old male with an asymptomatic 8 cm teratoma located within the lesser sac of his omentum. This is the fourth case of a teratoma located within the lesser sac of the omentum, which provides the opportunity to make some comparisons. Fi...

Clinical case: A 46 year-old patient, with no significant past medical history or family medical history, complaining of mild epigastric discomfort and weight loss during the past year was examined by abdominal ultrasound. During the US examination a 11/9.5/6.5cm mass was identified anterior to the body and tail of the pancreas, and posterior to the stomach, in the area of the lesser sac (fig. ...

a malignant peripheral nerve sheath tumor (mpnst) is very rare, representing 3 - 10% of all soft tissue sarcomas. approximately half of all such tumors are diagnosed in patients with neurofibromatosis type 1 (nf1). the extremities are involved most commonly, and the patient’s age is usually 20 - 50 years. herein, we present a case of an mpnst that developed sporadically in an unusual location a...

The lesser sac is located anterior to the pancreas and immediately posterior to the body of the stomach (1-3). Caudate lobe liver and splenic artery are also the parts of the lesser sac (4). A fluid collection in the lesser sac in not a typical manifestation of benign ascites, and its presence should direct a search for a pathologic condition in neighboring organs (5). We present a 38year-old m...