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Multilocular clear cell renal cell carcinoma is a specifc histologic type listed in the CAP cancer protocol for kidney, but not in the ICD-O-3 and it is not on the list of specific types of renal cell carcinomas in Table 1 of the kidney equivalent terms and definitions in the MP/H manual. There is a malignant multilocular cystic nephroma 8959 in Table 1, but I can't tell if this the same histology as what is stated in this path report.

The path report reads: COMMENT: There is multifocal involvement throughout both bowel segments which combined represent a subtotal colectomy procedure. There are at least 11 tumors, all of which are histologically similar. Given the unusual gross appearance, a representative portion of the largest mass (hepatic flexure) was forwarded to _____ for flow cytometric evaluation. There is chronic active colitis in the background suggestive of idiopathic inflammatory bowel disease, specifically ulcerative colitis. However, no dysplasia is seen in multiple random sections of grossly benign large bowel. ADDENDUM from expert gastroenterologist: The carcinomas are poorly differentiated without specific histologic features but are consistent with colon primaries. These findings are consistent with an MLH1-deficient carcinoma. Given the background chronic active colitis consistent with ulcerative colitis, this likely represents colitis-associated neoplasia which can be associated with multifocality.

A patient was diagnosed with hepatocellular cancer (HCC) in 2010, and underwent a hepatectomy, and then received a donor liver. In 2014, HCC was discovered in the liver once again. This likely is a new primary, but there are no specific rules to cover this. There are many odd situations involving transplanted organs, many of which pose reportability and multiple primary problems.

The note explains: The International Society for the Study of Vulvovaginal Disease (ISSVD) in 2004 revised its classification of VIN by eliminating VIN 1 and combining VIN 2 and VIN 3 into a single category (see table below). Classification of VIN (usual type) ISSVD [International Society for the Study of Vulvovaginal Disease]1986 classification 2004 classification VIN 1 VIN2 VIN3 VIN Note: VIN 2 and VIN 3 combined into single [non-graded] category, VIN Reference: Scurry J and Wilkinson EJ.  Review of terminology of precursors of vulvar squamous cell carcinoma. Journal of lower genital tract disease, 2006; 10(3):  161-169

The rules for coding Bladder Grade appear to have changed over time. SPCM 2013 Appendix C instructions state that Grade should be coded to 9 for urothelial carcinoma in situ (8120/2) and to 1 or 3 for non-invasive papillary urothelial carcinoma (8130/2).

When the grade instructions were removed from Appendix C in 2014, these site specific instructions for in situ bladder cases were no longer included. Thus the two grade system, found in SPCSM 2014+ Grade/Differentiation Coding Instructions for Solid Tumors, is being used to code grade for both the in situ and invasive urothelial malignancies stated to be "low grade" (code 2) or "high grade" (code 4). See also, SINQ 20150022. Please clarify the current grade instructions for in situ and invasive urothelial carcinomas of the bladder.

The UroVysion website says that standard procedures, e.g., cytology, cystoscopy, take precedence over the UroVysion test. The Quest Diagnostics website says that "A positive result is consistent with a diagnosis of bladder cancer or bladder cancer recurrence, either in the bladder or in another site within the urinary system. A negative result is suggestive of the absence of bladder cancer but does not rule it out." Would we pick up the case if the UroVysion test was positive but the standard procedures were negative or non-diagnostic?

Foreskin circumcision shows: Penile intraepithelial neoplasia, differentiated type (differentiated PeIN). If reportable, how would the histology and behavior be coded? Is this behavior /2?