A Rare Isolated Kidney Cyst: Hydatid Cyst

Abstract

Hydatid disease is a parasitic disease caused by Echinococcus granulosus or Echinococcus multilocularis. It is still a serious public health problem in endemic regions such as the Mediterranean basin. Since the complaints caused by the cysts are non-specific and routine laboratory tests do not always yield positive results, diagnosis may be difficult. While liver involvement is present in 70% of cases, larvae escaping from the filtration of the liver cause pulmonary disease in 25% of cases. Although the prevalence of kidney involvement in all hydatid cysts is approximately 2-4%, and isolated kidney involvement is extremely rare at 1.9%. In this case report, we present an extremely rare pediatric case of isolated renal hydatid cyst, the diagnosis of which was somewhat delayed.

Keywords: benign renal mass; computerized tomography; general pediatrics; kidney ultrasound; parasitic disease.

Figure 1. Abdominal tomography image of the patient

The arrow points to an 18x17 mm cystic lesion with lobulated contour and membranous structures in the lower-central part of the left kidney.