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.
[Show abstract][Hide abstract] ABSTRACT: Actinomycosis of the kidney is a rare bacterial infection, which poses a diagnostic challenge. Because the diagnosis can mimic a renal tumor, excision is often the diagnostic and therapeutic option. We describe the first case of renal actinomycosis in a woman with previously diagnosed renal cell carcinoma of the contralateral kidney. In contrast to most cases, sparing of her only functioning kidney was the priority that prompted a conservative diagnostic approach and treatment, as equally effective as surgery.
Infectious Disease in Clinical Practice 09/2012; 20(5):362-364. DOI:10.1097/IPC.0b013e31824f8c34
[Show abstract][Hide abstract] ABSTRACT: Renal actinomycosis is a rare infection caused by fungi of the genus Actinomyces. A 74-year-old male was admitted to our hospital because of gross hematuria with urinary symptoms and intermittent chills. Computed tomography of the abdomen showed thrombosis in the left renal vein and diffuse, heterogeneous enlargement of the left kidney. After nephrectomy, sulfur granules with chronic suppurative inflammation were seen microscopically, and the histopathological diagnosis was renal actinomycosis. Our case is the first report of renal actinomycosis with renal vein thrombosis.
[Show abstract][Hide abstract] ABSTRACT: We report an uncommon case of a renal abscess with actinomycosis infection in a 59-year-old female, who had stage 5 chronic renal disease and type 2 diabetes mellitus. Abdominal computed tomography revealed an enlarged right kidney infiltrated with multiple cyst-appearing lesions of homogeneous, low density contents. A nephrectomy was performed because of persistent toxic signs after treatment with antibiotics. The patient was well 1 year following surgery. We also review previous cases reported in the literature.
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