Horino Taro, Yamamoto Michiya, Morita Masaru, Takao Toshihiro, Yamamoto Yukio, Geshi Takamaro
Department of Internal Medicine and Psychiatry, Geshi Hospital, Kochi, Japan.
South Med J. 2004 Mar;97(3):316-8. doi: 10.1097/01.SMJ.0000072362.01568.D7.
A 68-year-old man was admitted after fever and general fatigue with severe inflammatory signs and anemia. T1- and T2-weighted magnetic resonance imaging showed low- to isointensity and low-intensity tumor in the right kidney, respectively, suggesting renal actinomycosis. However, the right kidney was explored transabdominally because the possibility of renal malignant lymphoma could not be excluded. After nephrectomy, characteristic colonies of Actinomyces were seen microscopically, and the histologic diagnosis was renal actinomycosis. The patient was treated with antibiotics and made good progress after operation. This case highlights the importance of magnetic resonance imaging for the diagnosis of renal actinomycosis.
一名68岁男性因发热、全身乏力伴严重炎症体征和贫血入院。T1加权和T2加权磁共振成像分别显示右肾肿瘤呈低至等强度和低强度，提示肾放线菌病。然而，由于不能排除肾恶性淋巴瘤的可能性，经腹部对右肾进行了探查。肾切除术后，显微镜下可见特征性放线菌菌落，组织学诊断为肾放线菌病。患者接受抗生素治疗，术后恢复良好。该病例强调了磁共振成像在肾放线菌病诊断中的重要性。
