Moteki T, Ishizaka H, Horikoshi H, Kubota J, Sakurai M, Tsushima Y, Satou N, Matsumoto M, Joshita T
Department of Diagnostic Radiology, Gunma University Hospital.
Nihon Igaku Hoshasen Gakkai Zasshi. 1995 Feb;55(3):145-9.
We report case of adenomyelolipoma. CT and MRI revealed a large, capsulated, septated adrenal mass with abundant fat tissue. However, enhancing components were demonstrated at the capsule and septations on angiography. On the pathological study, the capsule and septations consisted of adrenal adenoma and the tumor contained various forms of myelolipomatous tissues. These myelolipomatous tissues were classified into 4 groups. Type I: Scattering of fat cells and hematopoietic elements without coalescence. Type II: Collection of myelolipomatous tissue with unclear margin or small myelolipomatous tissue that cannot be classified as type I or III. Diameter of the lesion is less than 1 cm. Type III: Collection of myelolipomatous tissue with clear margin or replacement of cortical nodule. Diameter of the lesion is less than 1 cm. Type IV: Collection of myelolipomatous tissue. Diameter of the lesion is equal to or greater than 1 cm. We defined adenomyelolipoma as a lesion combining adrenal adenoma (or hyperplasia) and various forms of myelolipomatous tissues (type I-IV) in view of the strong relationship between adrenal adenoma (or hyperplasia) and myelolipomatous tissue.
我们报告了肾上腺髓质脂肪瘤的病例。CT和MRI显示一个大的、有包膜的、分隔的肾上腺肿块，伴有大量脂肪组织。然而，血管造影显示包膜和分隔处有强化成分。病理研究显示，包膜和分隔由肾上腺腺瘤组成，肿瘤包含各种形式的髓质脂肪瘤组织。这些髓质脂肪瘤组织分为4组。I型：脂肪细胞和造血成分散在分布，无融合。II型：髓质脂肪瘤组织聚集，边界不清，或为无法归类为I型或III型的小髓质脂肪瘤组织。病变直径小于1cm。III型：髓质脂肪瘤组织聚集，边界清晰，或取代皮质结节。病变直径小于1cm。IV型：髓质脂肪瘤组织聚集。病变直径等于或大于1cm。鉴于肾上腺腺瘤（或增生）与髓质脂肪瘤组织之间的密切关系，我们将肾上腺髓质脂肪瘤定义为一种结合了肾上腺腺瘤（或增生）和各种形式髓质脂肪瘤组织（I - IV型）的病变。
