Segmental cystic renal disease: Sonographic and CT findings

✍ Scribed by Ankur Gadodia; Shivanand Gamanagatti; Zafar Neyaz

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 84 KB
• Volume: 37
• Category: Article
• ISSN: 0091-2751
• DOI: 10.1002/jcu.20636

✦ Synopsis

Wankhar et al. 1 and would like to report a similar case. A 60-year-old man presented with dull pain in the right flank for 2 years. There was no history of hematuria and no family history of renal disease. Blood pressure was 130/90 mmHg, and physical examination was unremarkable. Urine analysis and renal function tests, including serum creatinine, were within normal limits. Ultrasound examination revealed an enlarged right kidney with multiple renal cysts without any internal solid component (Figure 1). Contrast-enhanced CT of the abdomen showed multiple simple cysts of various sizes occupying most of the right kidney (Figure 2). The cysts were separated by normal renal parenchyma. A small amount of normally enhancing renal tissue was also seen near the right interpolar region. A cyst at the upper pole showed a curvilinear calcification in the wall. The left kidney was normal. There was no retroperitoneal adenopathy. No cyst was seen in the other intra-abdominal organs. Symmetric excretion of contrast medium was seen from both the kidneys in the excretory phase. Colonoscopic evaluation was unremarkable. Based on history and characteristic imaging findings, a diagnosis of localized cystic disease of the kidney was made. The patient was managed conservatively. During a 12-month follow-up, the sonographic appearance remained unchanged and the patient maintained good renal function. Radiologists should be familiar with imaging features of localized cystic disease of the kidney in order to differentiate it from such other cystic renal conditions as autosomal dominant polycystic kidney disease, multicystic dysplastic kidney, and cystic neoplasm. 2,3 Because this is a benign condition, only follow-up is needed and surgery is usually unnecessary.