renal pelvis neoplasm (MONDO_0003719) is a neoplasm (disease) that involves the renal pelvis. Also known as: kidney pelvis neoplasm, kidney pelvis tumor, kidney pelvis tumour, neoplasm of kidney pelvis, neoplasm of renal pelvis, neoplasm of the kidney pelvis, neoplasm of the renal pelvis, renal pelvis neoplasm (disease).