Forino M, Davis G L, Zins J H
Department of Radiology, Bridgeport Hospital, CT 06610.
Diagn Cytopathol. 1993 Oct;9(5):565-9. doi: 10.1002/dc.2840090520.
Renal splenic heterotopia, a very rare benign occurrence of splenic tissue within the renal capsule, mimics organizing capsular hemorrhage, adenomyolipoma and renal cortical adenoma or carcinoma. It is found incidentally as a result of imaging asymptomatic kidneys for other reasons or may cause signs and symptoms due to mass effect and hypersplenism. When occurring in patients who had had splenectomy it has been classified as splenosis. When found in patients with intact spleens it is called splenorenal fusion and considered to be a developmental heterotopia. Renal splenic heterotopia can be diagnosed by 99mTc-sulfur colloid scan and confirmed with fine needle aspiration biopsy cell block preparations. Unnecessary nephrectomy can be avoided if splenic heterotopia is included in the differential diagnosis of renal lesions, particularly in splenectomized patients.
肾脾异位于症是一种极为罕见的良性情况，即脾组织出现在肾被膜内，可类似机化性包膜下出血、肾血管平滑肌脂肪瘤以及肾皮质腺瘤或癌。它多因其他原因对无症状肾脏进行影像学检查时偶然发现，也可能因占位效应和脾功能亢进而引发体征和症状。当发生于已行脾切除术的患者时，被归类为脾组织植入。当在脾脏完整的患者中发现时，则称为脾肾融合，被认为是一种发育性异位。肾脾异位于症可通过99mTc - 硫胶体扫描诊断，并通过细针穿刺活检细胞块制备来确诊。如果在肾病变的鉴别诊断中考虑到脾异位于症，尤其是在脾切除患者中，可避免不必要的肾切除术。
