Isolated Renal Hydatid Cyst Mimicking Renal Cell Carcinoma: A Diagnostic Dilemma
Dr. Anshu Gupta
R13/27, Raj Nagar, Ghaziabad, UP, India - 201002.
Phone: 09999 66 5416
Email ID: email@example.com
Context : Hydatidosis due to Echinococcus granulosus is a parasitic zoonosis with worldwide occurence. The most common locations are liver and lung. Occasionally, it may mimic intra abdominal tumour.
Aims: Hydatid disease of the urinary tract is uncommon, occurring in only 2 to 3% of all cases. This case is presented with the aim of highlighting a giant renal echinococcus cyst, misdiagnosed as renal malignancy on imaging.
Setting: The misdiagnosis of renal carcinoma was made in the case of a 65-year-old man.
Materials and Methods: The patient presented with colicky pain in right flank with fever, nausea and vomiting. Right kidney was palpable with leucocytosis and proteinuria.
X ray abdomen revealed ring calcifications in right upper quadrant. Ultrasonography (USG) and computerised tomography (CTshowed a soft tissue mass in right kidney.
Intravenous urography with conventional tomography 15 minutes after contrast demonstrated nil nephrogram in right kidney.
CT findings were suggestive of renal cell carcinoma.
Conclusions: Hydatid cyst can attain large dimensions and can easily be misdiagnosed as a tumour. Despite its rarity, hydatid disease should be considered in the differential diagnosis of renal space-occupying lesions.