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Report Produced: 10/08/2026 18:34 PM

Report Question ID Question Discussion Answer Cancer Site Category Data Item Category Year
20240040

First course treatment--Kidney: How should the different treatment fields be coded if surgery is planned but cancelled due to patient noncompliance, then the tumor is treated with ablation, and eventually surgery is given due to residual disease? See Discussion.

Patient was diagnosed in July 2022 with biopsy confirmed left kidney renal cell carcinoma. Initially, partial nephrectomy was planned for February 2023 but canceled at the last moment due to the patient’s “history of narcotic use.” The details of that cancellation were otherwise unclear. It appears the treatment plan was changed due to patient non-compliance.

Patient then had cryoablation of the tumor in May of 2023. Subsequent imaging in October found residual tumor, but no disease progression was noted. Again, additional ablation was offered but patient decided on surgical treatment which did not occur until December 2023.

Is the cryoablation second course due to a change of plan if there is no disease progression, recurrence, or treatment failure?

If the cryoablation is first course treatment, then would the partial resection also be first course treatment because it was documented as the treatment plan?

The treatment with cryoablation is second course. Once the initial treatment plan is changed, everything after the change is no longer first course of treatment. If the cryoablation was not mentioned as part of the original treatment plan, it is second course.

 Kidney, renal pelvis First course treatment 2024
20100025

MP/H Rules/Primary site--Kidney, Renal Pelvis: Should the primary site be changed to C689 [Urinary system, NOS] for a primary renal pelvis tumor after additional tumors are found months later in different urinary sites (e.g., bladder or ureter) and the MP/H Rules indicate these are all the same primary? See Discussion.

In a patient is diagnosed 1/29/08 with an invasive grade 3 of 3 papillary urothelial cell carcinoma arising in the depth of a calyx in mid portion of kidney, the primary site was coded C659 [Renal pelvis]. In 6/1/09 a TURBT showed three separate lesions on the right side of the bladder. The final diagnosis was high grade urothelial carcinoma in-situ with three tumors, the largest being 7mm. Per rule M8, the renal pelvis primary and subsequent bladder tumors are the same primary. Would the primary site be changed to C689 [Urinary system, NOS] when the bladder tumors were identified? Or is C689 only coded if more than one primary site is involved at diagnosis?

For cases diagnosed 2007 or later, Rule M8 applies. This is a single primary. The primary site was coded to C659 in 2008. Do not change the primary site code.

 Kidney, renal pelvis Primary site 2010
20170004

MP/H Ruels/Histology--Kidney/renal pelvis: How is MiT family translocation renal cell carcinoma (RCC) with Xp11 translocation coded? See Discussion.

Pathology states: Translocation renal cell carcinoma. Comment Tumor morphology and IHC profile consistent with MiT family translocation RCC with Xp11 translocation.

Assign 8312/3 to MiT family translocation renal cell carcinoma (RCC) with Xp11 translocation.

The recent WHO 4th Ed Tumors of the Urinary System has proposed a new ICD-O-3 code for MiT family translocation RCC, however the implementation of this new code has not yet been approved by the standard setters (SEER, CoC, CDC, NAACCR). Until it is approved, code histology to renal cell carcinoma (8312/3).

 Kidney, renal pelvis Histology 2017
20140022

MP/H Rules/Kidney, renal pelvis--How many primaries are there for this case? Should we stop at rule M8 making this all one primary (C689) even though there were right and left renal pelvis tumors? Rule M3, which contains laterality, does not apply because there is also a bladder tumor. See discussion.

Kidney: originally diagnosed 12/21/2011 with right renal pelvis high grade papillary urothelial cancer. Status post right nephrectomy. Then on 01/10/2013 diagnosed with low grade papillary urothelial cancer of the bladder. 01/21/2013 diagnosed with left renal pelvis urothelial carcinoma iIn situ. Path report stated this may represent a hgh grade papillary urothelial cancer – unable to confirm due to specimen size. On 01/24/2013 left periaortic lymph node biopsy revealed poorly differentiated carcinoma consistent with prior diagnosed right renal pelvis high grade urothelial cancer. Neither the bladder nor the left renal pelvis tumor was compared to the previous right renal pelvis tumor. Also has bone mets.

Abstract this case as a single primary.

First, apply the MP/H rules to compare the 2013 bladder tumor to the 2011 renal pelvis tumor. Rule M8 applies, this is a single primary. Next, apply the MP/H rules to compare the 2013 in situ renal pelvis tumor to the 2011 renal pelvis tumor. Rule M8 applies, this is a single primary. As you correctly pointed out, Rule M3 for bilateral renal pelvis tumors, does not apply because there is also a bladder tumor in this case.

Kidney, renal pelvis N/A 2014
20031008 Histology (Pre-2007)--Kidney: Is 8316/3 [Cyst associated renal cell carcinoma] the appropriate code for 1) Cystic renal cell carcinoma, 2) Renal cell carcinoma mass with cystic areas and 3) Cystic renal cell carcinoma, clear cell type?

For tumors diagnosed prior to 2007:

Yes, ICD-O-3 histology code 8316 is the correct code for the three examples above.

There are two categories of cyst-associated renal cell carcinomas: Renal cell carcinoma originating in a cyst, and Cystic renal cell carcinoma.

For tumors diagnosed 2007 or later, refer to the MP/H rules. If there are still questions about how this type of tumor should be coded, submit a new question to SINQ and include the difficulties you are encountering in applying the MP/H rules.

 Kidney, renal pelvis Histology 2003
20170028

MP/H Rules/Histology--Kidney: How should histology be coded for a clear cell renal cell carcinoma when the CAP protocol indicates sarcomatoid features are present? See Discussion.

Sarcomotoid (8318) is listed as a specific renal cell subtype in the MP/H manual, but it is not listed as a renal cell subtype in the most recent WHO blue book for Urinary Organs. We are wondering if sarcomatoid features, as listed in the CAP protocol format in the following example, should be ignored when coding histology?

Left kidney, radical nephrectomy:

Clear cell renal cell carcinoma, with the following features:

Tumor size: 8.5 X 6 cm.

Tumor focality: Unifocal.

Macroscopic extent of tumor: Tumor limited to kidney.

Sarcomatoid features: Present (<20% of tumor shows sarcomatoid features).

Histologic grade: G4.

Microscopic tumor extension: Tumor limited to kidney.

Margins: All margins negative for invasive carcinoma.

Lymph-vascular invasion: Not identified.

Code 8255 (adenocarcinoma with mixed subtypes). The Multiple Primaries/Histology Rule H6 applies as there are two or more specific renal cell carcinoma types, clear cell and sarcomatoid (Spindle cell), as listed in Table 1 of the kidney Terms and definitions.

 Kidney, renal pelvis Histology 2017
20150067

MP/H Rules/Histology--Kidney: What is the correct histology for this diagnosis? See discussion.

Procedure: Nephrectomy

Laterality: Left

Tumor type: SOLID VARIANT RENAL CELL CARCINOMA

Nuclear grade: High grade (3/4)

Histologic grade: Poorly differentiated

Pattern of growth: Solid

Tumor size: 5x4.5x4cm

Local invasion: Present

Renal vein invasion: None

Surgical margins: Negative

Non-neoplastic kidney: Unremarkable

Adrenal gland: Not submitted

Lymph nodes: Not present

Pathologic stage: T1b

There are solid sheets of tumor cells without papillary structure. The tumor stains positive for Pax-2, negative for Ecadherin, P63 and CK7, consistent with renal cell carcinoma, solid variant.

Assign histology code 8312, renal cell ca, NOS. There is no specific code for the solid variant of renal cell carcinoma.

Kidney, renal pelvis Histology 2015
20220013

Reportability/Histology--Kidney:  What is the histology and behavior of a papillary renal neoplasm with reverse polarity? See Discussion.

Patient had a partial nephrectomy with final diagnosis of papillary renal neoplasm with reverse polarity.  Diagnosis comment states: Papillary renal neoplasm with reverse polarity is currently considered to be a histologic variant of papillary renal cell carcinoma; however, recent studies suggest that it has a very indolent clinical behavior.

Report papillary renal neoplasm with reverse polarity as 8260/3. According to the WHO Classification of Urinary and Male Genital Tumors, 5th edition, this is a distinctive pattern of papillary renal cell carcinoma that has been recently recognized. These tumors have recurrent mutations of KRAS, differing from typical papillary renal cell carcinoma. We recommend that you include with reverse polarity in your histology text to differentiate this entity from others classified in 8260/3.

 Kidney, renal pelvis Behavior, Histology 2022
20120055 Surgery of Primary Site--Kidney, renal pelvis: How do you code a laparoscopic renal mass core biopsy followed by cryoablation of the tumor? See Discussion. The note under the local tumor destruction codes states "No specimen sent to pathology from this surgical event 10-15." The patient had a pathologic specimen submitted from his core biopsy, but this was not a tumor excision or excisional biopsy [codes 20, 26-27]. Is the correct surgery code 13 [cryosurgery] because the tumor was only ablated and not excised, or surgery code 23 [any combination of 20 or 26-27 with cryosurgery] because a pathology specimen was submitted? Code for Surgery of Primary Site to 13 [Cryosurgery]. While the core biopsy provided a pathology specimen, it is not coded as surgery of the primary site. Kidney, renal pelvis Surgery of Primary Site 2012
20120091 Reportability/Behavior--Kidney: Is epithelioid angiomyolipoma (AML) of the kidney a reportable malignancy? See Discussion. The addendum final diagnosis on a pathology report for a kidney core needle biopsy included the results of additional stains performed on the tissue. It indicated the morphology was most consistent with epithelioid angiomyolipoma. Further comments in the body of the report indicate these tumors are now considered malignant neoplasms with the capacity to be locally aggressive and they can potentially metastasize. There is no mention of a metastasis in this particular case.

Epithelioid angiomyolipoma (AML) [8860/0] of the kidney is not reportable unless stated to be malignant.

If the pathologist confirms this is a malignancy, apply ICD-O-3 Rule F (Matrix principle) and assign the behavior code /3. If confirmation is received, accession the case using the morphology code 8860/3 [malignant angiomyolipoma].

Kidney, renal pelvis Behavior 2012