benign neoplasm of renal pelvis (MONDO_0021467) is a benign neoplasm that involves the renal pelvis. Also known as: benign kidney pelvis neoplasm, benign neoplasm of the renal pelvis, benign renal pelvis neoplasm, benign renal pelvis tumor, benign renal pelvis tumour, benign tumor of renal pelvis, benign tumor of the renal pelvis, benign tumour of renal pelvis.