Pelvic hydatid: the great masquerader

Description 

A 52-year-old man presented with urinary frequency and occasional lower abdominal pain for 4 months. His uroflow study and postvoid residual urine were normal and his digital rectal examination had grade 2 prostatic enlargement. His urinary symptoms were attributed to benign prostatic hyperplasia, and he was prescribed tamsulosin (0.4 mg) and solifenacin (5 mg) for his symptoms. One week later he only had partial relief of symptoms, thus an ultrasound was done that showed a cystic lesion abutting the urinary bladder in the region of right iliac fossa (figure 1). A contrast-enhanced CT (CECT) scan was then done, which showed a cystic lesion (3.8x4 cm) with enhancing internal septa and peripheral wall enhancement abutting the urinary bladder (figure 2). There was no other cyst in the abdomen so a provisional diagnosis of primary pelvic peritoneal hydatid cyst was made. We then carried out a cystoscopy to...

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