Morphology & Grade
ICD-O-3 Morphology Codes
If the diagnostic term in the pathology report is not in the list below, be sure to consult your ICD-O manual.
- Adenocarcinomas (81403) of the kidney parenchyma are the most common (85% of all tumors).
- Hypernephroma, renal cell carcinoma or Grawitz tumor (83123)
- Clear cell (83103)
- Papillary (82603)
- Granular cell (83203)
- Spindle cell (80323)
- Transitional cell carcinoma (81203) most common morphology in renal pelvis; may be a function of a urothelial field defect.
- Papillary carcinoma (81303)
- Squamous cell carcinoma (80703) < 15% of renal pelvis tumors
- Other histologies
- Wilms tumor (nephroblastoma; 89603)—large bulky tumor of childhood; rare in adults
- Lymphoma (many cell types)
- Sarcoma (many cell types)
- Hemangiopericytoma (91503)
Grade of tumor correlates with stage; superficial tumors are usually grade I-II; infiltrating tumors are commonly grade III-IV.
Synonyms for in situ carcinoma: CIS, Stage 0, CIN grade III, confined to epithelium, intraepithelial, involvement up to but not including the basement membrane, noninfiltrating, noninvasive, no stromal involvement, papillary noninfiltrating, noninvasive papillary, stage "Ta"