Omental Masses


True omental cysts are discovered most frequently in children or young adults. They are generally asymptomatic and detected incidentally at laparotomy or at autopsy. Large cysts may produce a palpable abdominal mass or cause diffuse abdominal swelling. On plain abdominal radiographs and barium studies, omental cysts appear as nonspecific soft tissue masses causing displacement or pressure effects on adjacent bowel loops. Ultrasound or CT shows an omental cyst as a fluid-filled mass that often contains internal septations.

Benign tumors of the omentum are very rare; most are composed of spindle cell elements. Computed tomography can demonstrate the fatty nature of an omental lipoma. On ultrasound, these tumors typically appear as strongly echogenic masses with good sound transmission.

By far the most common tumor of the omentum is metastatic carcinoma. Diffuse neoplastic infiltration of the greater omentum produces the distinctive CT appearance of a soft tissue mass separating the colon or small intestine from the anterior abdominal wall, with obliteration of the normal fat plane in the area. Such “omental cakes” are most frequently produced by metastatic ovarian adenocarcinoma; other causes include metastases frorp cervical, endometrial, and colon carcinoma.

omental mass · omental mass abdomen · omental masses ·

Comments are closed.

  • Advanced Random Posts

    • Fractures of the Tibial and Fibular Shafts: Direct trauma to the tibia may result in a transverse, segmental, or comminuted fracture of the tibial shaft; there is usually an associated fracture of the fibula. Indirect torsional forces, as in sk...


    • Anomalies of Fusion: Horseshoe kidney is the most common type of fusion anomaly. In this condition, both kidneys are malrotated and their lower poles are joined by a band of normal renal parenchyma (isthmus) or connective...


    • Thyroid Adenoma: Thyroid adenomas are encapsulated tumors that vary greatly in size and usually compress contiguous tissue. They may be located within the neck, where they tend to cause deviation or compression of the...


    • Neonatal Adrenal Hemorrhage: Neonatal adrenal hemorrhage most often occurs in infants born to diabetic mothers and in infants with an abnormal obstetric history (prematurity, the use of forceps, breech delivery). During the total...


    • Choosing the Right Hairstyle : A good hairstyle is usually the result of trial and error, and often the errors are painful because it takes months to correct them. But we women are compelled to take all these risks with our hair fo...