Wonder what is that? Well that's a 2KG stone in the bladder of a 46 year old patient. The stone occupies the totality of bladder. Bigger than the head of a newborn. Measuring 9cm by width,11cm by length. Diagnosis of the stone includes: urinalysis, ultrasonography, x rays or cystoscopy (inserting a small thin camera into the urethra and viewing the bladder).