The Pathology Imagebase is a tool for standardization of pathology that has been created by the International Society of Urological Pathology (ISUP). A panel of leading international experts in GU pathology continuously upload representative microphotographs from urological pathology.
Case of the month: October 2016
A 53 year-old female with an incidentally found 2.9 cm right renal mass on abdominal ultrasound.
Percutaneous needle biopsy was performed
limited lesion sampling (1-2 mm of tumor in a 15 mm core)
bland ovoid and spindle cells with no overt malignant features
positive for CD34 and SMA; negative for epithelial markers
reported as “mesenchymal neoplasm – definitive classification not possible on biopsy”
Patient chose surgical management over active surveillance with serial imaging
A right partial nephrectomy was performed