Primary liposarcoma of the omentum: A case report

RATIONALE: Omental liposarcoma is extremely rare, and only a few reports have been published in the literature. Due to the rarity of the disease, establishing a clear diagnosis and formulating a treatment plan may be challenging for clinicians. PATIENT CONCERNS: The patient was a 51-year-old woman who presented with a protruding mass and pain in the lower abdomen. DIAGNOSIS: Magnetic resonance imaging revealed a tumor measuring 15 cm in diameter in the pelvis. Ovarian cancer was suspected based on pre-operative imaging findings. INTERVENTIONS: An exploratory laparotomy was performed. Intra-operative analysis of the frozen section suggested a benign tumor. OUTCOMES: Postoperative histopathological analysis confirmed the diagnosis of omental liposarcoma. The patient recovered well after surgery. LESSON: This case report helps clinical oncologists to develop a comprehensive understanding of this disease and treat it accordingly.