This article reviews the computed tomography imaging features of a variety of gastric tumors containing fatty tissue. Lipoma, angiolipoma, liposarcoma, and teratoma are described. Differential diagnosis includes primary and reactive lipomatosis, carcinoma engulfing the perivisceral fat thus mimicking differentiated liposarcoma, and mesenchymal gastric and peritoneal neoplasms.

Lipomatous tumors of the stomach: CT findings and differential diagnosis.

Liposarcoma is the most common soft tissue sarcoma and accounts for 15%-20% of all mesenchymal malignancies. The tumor occurs most frequently in the limbs, retroperitoneum and rarely has a visceral location. We report a case of a gastric liposarcoma in a male patient. A 68 years old male patient was admitted to hospital for abdominal discomfort and fullness lasting for a month. He reported rare episodes of vomiting. The CT examination revealed a large epigastric mass (8 cm x 4 cm) involving the lesser curvature of the stomach, in contact with the pancreas and gallbladder. Fatty areas within the mass were evident. A total gastrectomy together with cholecystectomy was performed. The histopathological diagnosis was a well differentiated liposarcoma. The patient did not undergo any adjuvant treatment, he is under close follow up and two years later he is disease free. We report this case due to the rarity of this tumor in the stomach (nine cases reported in the literature).

Liposarcoma of the stomach: a rare case report.

Introduction
Leiomyosarcomas are one of the most common soft tissue sarcomas, usually seen in deep, soft tissues of the extremities and retroperitoneum. Leiomyosarcoma primarily involving the gastrointestinal tract is uncommon. We present here a rare case of gastric leiomyosarcoma revealed by a massive hematemesis in a young woman.

Primary Gastric Leiomyosarcoma in Young Revealed by a Massive Hematemesis

Liposarcomas are the second most common soft tissue sarcomas in adults [1]. A large bleeding or atypical-appearing lipomatous colonic polyp should raise concern for a colonic liposarcoma. Common sites for liposarcoma, in order of prevalence, include extremities, retroperitoneum, inguinal, mesenteric, and mesocolon [2]. Although several cases of mesocolonic and other extracolonic liposarcomas have been reported, very rarely do these present as a colonic polyp [3–6]. In fact, there are only 3 reported cases of liposarcomas presenting as a colonic polyp [6–8]. We present a case of a large polypoid liposarcoma which clinically presented as an overt lower gastrointestinal (GI) bleed. Additionally, this case demonstrates similar clinical features seen among reported cases of colonic polypoid liposarcomas.

Liposarcoma in a Colonic Polyp: Case Report and Review of the Literature

Liposarcoma of the stomach is extremely rare, and only 37 cases have been reported worldwide. We herein report two cases of liposarcoma of the stomach. The first patient was referred to our hospital with upper abdominal discomfort. The endoscopic examination revealed a tumor mass about 3 cm in diameter. The patient underwent a partial gastrectomy and had an uneventful recovery. The histopathological examination revealed a well-differentiated liposarcoma. The second patient had symptoms of upper abdominal discomfort combined with nausea and anorexia. Several palpable masses were found with endoscopy. Endoscopic submucosal dissection was the treatment used, and the postoperative course was uneventful. The histopathological diagnosis was a well-differentiated liposarcoma. The two patients did not undergo any adjuvant therapy. They are both currently in good condition without recurrence. Therefore, we believe that the outcome of liposarcoma of the stomach is positive, and surgical resection may be the first choice for treatment at present.

Liposarcoma of the stomach: Report of two cases and review of the literature

We present a case of gastric liposarcoma, a very uncommon pathology; only nine cases have been reported in the literature. We describe the radiologic findings of this neoplasm and emphasize the correlation between computed tomography (CT) and the macroscopic morphology of the tumor, which is conditioned by its histology. In our case, CT demostration of fatty areas within the gastric mass facilitated the diagnosis. This finding has not been described for liposarcomas of the stomach.

Liposarcoma of the stomach

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Liposarcoma of the stomach