CT urogram in the coronal plane using bone windows shows evidence of papillary necrosis in 2 right upper pole calyces characterized by “golf ball on a tee” sign. This sign is also called the “lobster claw” sign
Ashley Davidoff MD TheCommonVein.net 135424c
40-year-old female with SLE and NSAID use presents with hematuria. CT with contrast in the axial plane during the excretory shows evidence of a filling defect in a contrast filled right renal calyx, resulting in a “lobster claw” appearance of the calyx characteristic of papillary necrosis
Ashley Davidoff MD TheCommonVein.net 113597c