They most frequently present as chronic abdominal distension. They less frequently present as an abdominal mass with pain, fatigue, or pallor; in these cases, surgical evaluation and cyst resection can be undertaken at the discretion of the patient / family. Omental cysts may rarely present as an acute abdomen requiring surgery or an enlarging cyst that compromises the respiratory or urinary system.
Complications from an enlarging omental cyst may include bleeding, infection, rupture, and torsion. In these rare cases, emergent complete surgical excision is warranted.
K66.8 – Other specified disorders of peritoneum
7102003 – Omental cyst
Differential Diagnosis & Pitfalls