Vesical Jack Stone: A Rare Entity

A ‘Jackstone’ is a sub-type of vesical calculus. It rarely occurs in the upper urinary tract [1]. It is
so-called for its semblance to the stuffs used in the kids’ game ‘Jacks’ (Figure 1). It has a spiculate, near-spiked view with a impenetrable dominant base [2]. It is theorized that jackstones constantly get interaction with the bladder wall mostly at the boundaries of its spikes, rubbing off the soft recently triggered adherent mucoprotein and apatite, while permitting deposition of additional