First course of treatment--Immunotherapy: Should Rituxan be coded to immunotherapy? See discussion.
Is the instruction under #4.b. on page 114 of the 2014 SEER Program Coding and Staging Manual incorrect? It says to code Rituxan as chemotherapy.
Rituxan changed categories from chemotherapy to a biologic therapy/Immunotherapy agent effective with cases diagnosed January 1, 2013. See page 150 or page 164 in the 2015 SEER manual. The instruction in the 2014 SEER manual was incorrect regarding Rituxan.
Primary Site--Skin: Should cutaneous leiomyosarcoma be coded to primary skin of site (C44_) or soft tissue (C49_)?
Code cutanteous leiomyosarcoma to skin. Leiomyosarcoma can originate in the smooth muscle of the dermis. The WHO classification designates this as cutaneous leiomyosarcoma. The major portion of the tumor is in the dermis, although subcutaneous extension is present in some cases.
MP/H Rules/Multiple primaries--Breast: Does rule M10 apply in this situation?
L breast biopsy = INVASIVE DUCTAL CARCINOMA
L breast simple mastectomy = 2.0 cm INVASIVE DUCTAL CARCINOMA with an incidental finding of separate 1.0 cm INVASIVE LOBULAR CARCINOMA; pathologist specifically states the tumors are morphologically different. The tumors are both pure Ductal/pure Lobular.
Yes, Breast rule M10 applies. This case is a single primary.
Follow the MP/H rules even though the "pathologist specifically states the tumors are morphologically different" so that situations like this are reported consistenty accross cancer registries, regions, and states for consistent national reporting.
Surgery of Primary Site: What is the most extensive, invasive or definitive surgical procedure when the second surgical procedure performed has a lower surgery code? See discussion.
5/xx/14 Segmental Mastectomy(24): Ductal carcinoma with <1mm marg 6/xx/14 Breast Re-excision (23): Residual ductal carcinoma 1.5mm, marg neg
The code in Surgical Procedure of Primary Site should correspond to the most invasive, extensive, or definitive surgery when the patient has multiple surgical procedures of the primary site even if there is no residual tumor found in the pathologic specimen from the more extensive surgery. The timing of the procedures does not affect the code choice.
Assign code 27 for the first example. Assign code 24 for the second example.
MP/H Rules/Histology: What is the proper histology code -- mucin producing adenocarcinoma or cholangiocarcinoma for the following case? See discussion.
4/10/13 Partial hepatectomy: well differentiated mucin producing adenoca involve right and left hepatic ducts, common hepatic duct & common bile duct. Invasion beyond wall of bile duct. CT Scan after 1st surgery shows residual neoplasm cannot be excluded
7/31/13 Left lateral segmentectomy: residual well differentiated cholangiiocarcinoma involving connective tissue surrounding major bile ducts. Per medical director, histolgically code to cholangiocarcinoma.
Primary site: Extra hepatic bile duct. Chemo (5FU, Leucovorin, Oxaliplatin) was started 5/1.
Code the histology as well differentiated mucin producing adenoca based on the 4/10/13 pathology report.
Code histology from the pathology report of the procedure which removed the most tumor tissue -- this is from the MP/H general instructions for coding histology. We are assuming that the partial hepatectomy removed the most tumor tissue in this case.
Per WHO, mucin producing adenoca is a variant of cholangiocarcioma.
Grade--Bladder: How is Grade coded for the following cases diagnosed 1/1/2014 and later? See Discussion.
1) Low grade urothelial carcinoma, invasive carcinoma not identified (8120/2)
2) Papillary urothelial carcinoma, high grade, no evidence of invasion (8130/2)
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.
Follow the instructions in the 2014+ Grade Coding Instructions to code grade for cases diagnosed 2014 and later, http://seer.cancer.gov/tools/grade/ Instruction #4.a. states to code grade for in situ tumors when grade is specified. This instruction applies to bladder cases, as well as other in situ tumors.
MP/H Rules/Multiple Primaries: Is this counted as one or two primaries?
Patient is diagnosed with SCC esophageal cancer. Work-up reveals a lung nodule. Lung FNA (cytology) is read by the pathologist as SCC, favor metastatic esophageal SCC. However, the managing physicians are treating the patient as two separate primaries.
If the patient is being managed and treated as a case of primary lung cancer, report the lung diagnosis as a separate primary.
Reportability--Appendix: Is the appendix the primary site for a low grade mucinous appendiceal neoplasm (LAMN) with diffuse peritoneal dissemination? See discussion.
Patient had an appendectomy revealing a low grade mucinous appendiceal neoplasm (LAMN) with diffuse peritoneal dissemination. Patient now with cytoreduction and hyperthermic intraperitoneal chemotherapy (HIPEC), which revealed metastatic disease in the abdomen, omentum, pelvic peritoneum, peri-cecal, and gallbladder.
For cases diagnosed prior to 1/1/2022
Low-grade appendiceal mucinous neoplasm (LAMN) is not reportable, even when it spreads within the peritoneal cavity, according to our expert pathologist consultant. Peritoneal spread of this /1 neoplasm does not indicate malignancy. It is still /1 when there is spread of LAMN in the peritoneal cavity.