Retroperitoneal lipomas are rare tumors. The etiology of their proliferation is uncertain. Metabolic and genetic causes have been reported. We present the case of a 12-year-old patient with a large pelvic lipoma causing dysuria and pelvic pain. Magnetic resonance imaging revealed the existence of a large retroperitoneal fat tumor. Ultrasound-guided fine needle biopsy was performed to exclude malignancy. The biopsy specimen revealed tissue consistent with a benign lipoma tumor. Exploratory laparotomy revealed a solid lipoma of the retroperitoneal space 8 x 6 cm and weighing 300 g. The patient had a good postoperative performance status. Lipomas should be considered in the differential diagnosis of a solid tumor in the retroperitoneal space.
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机译:腹膜后脂肪瘤是罕见的肿瘤。其增殖的病因尚不确定。已经报道了代谢和遗传原因。我们介绍了一名12岁的患者,该患者患有大型盆腔脂肪瘤,导致排尿困难和盆腔疼痛。磁共振成像显示存在大的腹膜后脂肪肿瘤。进行超声引导的细针穿刺活检以排除恶性肿瘤。活检标本显示与良性脂肪瘤肿瘤一致的组织。探索性剖腹术显示腹膜后间隙为8 x 6 cm实性脂肪瘤,重300 g。该患者术后表现良好。在鉴别腹膜后间隙实体瘤时应考虑脂肪瘤。
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