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原发性腹膜后肿瘤是一组罕见的多种组织类型的肿瘤。作者描述了90例(19类)原发性腹膜后肿瘤的CT特点,并结合病理和临床病史作了分析。作者指出,有1/4恶性纤维组织细胞瘤存在营养障碍性钙化;脂肪肉瘤的CT表现则依肿瘤的分化程度而异,表现为脂肪密度为主的非均质性肿块,或为伴有坏死区域的软组织密度病灶;平滑肌肉瘤以坏死区相对广泛为特点;成神经细胞瘤和成神经节细胞瘤好发于儿童,肿瘤内常含钙化;血管瘤和血管外皮细胞瘤含丰富血管,其特征性CT表现为,静注造影剂后病灶明显强化;腹膜后嗜铬细胞瘤位于
Primary retroperitoneal tumors are a group of rare tumors of multiple tissue types. The authors described the CT features of 90 cases (19 categories) of primary retroperitoneal tumors, combined with histological and clinical history. The authors pointed out that 1/4 of the malignant fibrous histiocytomas have dystrophic calcifications; the CT appearance of liposarcoma varies according to the degree of differentiation of the tumor, manifesting as an adipose mass with a predominance of fat density, or with necrosis. Regional soft tissue density lesions; leiomyosarcoma is characterized by a relatively wide area of necrosis; neuroblastomas and ganglioneuromas occur predominantly in children; tumors often contain calcification; hemangiomas and hemangiopericytomas are rich in blood vessels, and their characteristics The CT manifestations were: lesions were significantly enhanced after intravenous injection of contrast agent; retroperitoneal pheochromocytoma was located