A middle-aged male presented with recurrent urinary tract infections and cystoscopy revealed a large bladder stone (7.0 x 5.2 cm) filling the whole bladder.
The object was removed by open cystolithotomy and sent to the lab for bladder stone analysis. 8.7 grams of material was removed from the 'stone' and analyzed (see below, image courtesy of Dr. Tom Moyer). It was found to be composed of 10% uric acid and 90% ammonium urate.
More surprising was the object discovered in the center of the 'stone' (shown below), which was immediately sent to the parasitology lab.
Every week I will post a new Case, along with the answer to the previous case. Please feel free to write in with your answers, comments, and questions. Also check out my image archive website at http://parasitewonders.com. Enjoy!
The Fine Print: Please note that all opinions expressed here are mine and not my employer. Information provided here is for medical education only. It is not intended as and does not substitute for medical advice. I do not accept medical consults from patients.