Waligore M P, Stephens D H, Soule E H, McLeod R A
AJR Am J Roentgenol. 1981 Sep;137(3):539-45. doi: 10.2214/ajr.137.3.539.
Twenty patients with pathologically confirmed extraparenchymal intraabdominal lipomatous tumors, including two lipomas, two cases of diffuse infiltrating lipomatosis, and 16 liposarcomas, were examined by computed tomography (CT). The CT appearance of these tumors closely correlated with their gross and microscopic pathologic anatomy. Distinctive CT features differentiated simple lipomas from diffuse infiltrating lipomatosis and from liposarcomas. The densities of these tumors, including the variable densities of liposarcomas, were explained by their tissue composition. Lipomas, diffuse infiltrating lipomatosis, and lipogenic liposarcomas were predominantly of fat density, whereas myxoid liposarcomas were of a higher range of densities. Liposarcomas often contained more than one type of tumor tissue, resulting in masses of distinctly different densities coexisting within the same tumor. CT accurately depicted the presence, location, and size of the tumors and provided information about their relation to adjacent structures.
20例经病理证实的腹腔内实质性外脂肪瘤样肿瘤患者接受了计算机断层扫描（CT）检查，其中包括2例脂肪瘤、2例弥漫性浸润性脂肪瘤病和16例脂肪肉瘤。这些肿瘤的CT表现与其大体和微观病理解剖密切相关。独特的CT特征可将单纯脂肪瘤与弥漫性浸润性脂肪瘤病及脂肪肉瘤区分开来。这些肿瘤的密度，包括脂肪肉瘤的密度变化，可通过其组织成分来解释。脂肪瘤、弥漫性浸润性脂肪瘤病和脂肪生成性脂肪肉瘤主要为脂肪密度，而黏液样脂肪肉瘤的密度范围较高。脂肪肉瘤通常包含不止一种类型的肿瘤组织，导致同一肿瘤内存在密度明显不同的肿块。CT准确地描绘了肿瘤的存在、位置和大小，并提供了有关其与相邻结构关系的信息。
