Tokuyama Naoto, Takeuchi Hisashi, Kuroda Isao, Aoyagi Teiichiro
Department of Urology, Tokyo Medical University Ibaraki Medical Center, Ibaraki, Japan.
Case Rep Urol. 2016;2016:6510930. doi: 10.1155/2016/6510930. Epub 2016 Dec 28.
Presacral myelolipomas are rare, benign, asymptomatic tumors composed of mature adipose tissue and hematopoietic elements, but fewer than 50 cases have been reported in the literature. They are usually discovered incidentally during imaging studies and are often misdiagnosed as liposarcoma, which have a malignant nature, because the imaging findings of myelolipoma can be similar to those of liposarcoma. It is challenging to distinguish presacral myelolipomas from other presacral fat-containing tumors without performing a histological examination. We should consider the possibility of a malignant tumor, and imaging-guided biopsy carries a risk of tumor spread along the biopsy tract. Therefore, surgical management might sometimes be required; however, it is not necessary in all cases. We present an incidentally detected case of presacral myelolipoma that was difficult to differentiate from other malignant tumors in a 71-year-old male.
骶前髓脂肪瘤是一种罕见的良性无症状肿瘤，由成熟脂肪组织和造血成分组成，但文献报道的病例少于50例。它们通常在影像学检查时偶然发现，且常被误诊为具有恶性性质的脂肪肉瘤，因为髓脂肪瘤的影像学表现可能与脂肪肉瘤相似。在未进行组织学检查的情况下，将骶前髓脂肪瘤与其他含脂肪的骶前肿瘤区分开来具有挑战性。我们应考虑恶性肿瘤的可能性，而影像引导下的活检存在肿瘤沿活检通道播散的风险。因此，有时可能需要手术治疗；然而，并非所有病例都有必要。我们报告一例71岁男性偶然发现的骶前髓脂肪瘤病例，该病例难以与其他恶性肿瘤区分。
