Report | Question ID | Question | Discussion | Answer | Year |
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20220021 | Solid Tumor Rules/Multiple Primaries--Brain and CNS: How many primaries are accessioned, and what M Rule applies, for a 2012 diagnosis of left cerebral transitional meningioma (9537/0) that transforms to an atypical meningioma (9539/1) in 2022? See Discussion. |
The patient underwent a resection of the transitional meningioma in 2012, but residual tumor was left behind. The patient was on surveillance until imaging showed growth of the residual tumor. The resection in 2022 proved atypical meningioma. Rule M2, the first rule that applies, indicates this situation represents a single primary (a single tumor). However, Rule M4 states the transformation from a benign meningioma to a borderline meningioma would only be a single primary if the meningioma was a NOS. This patient has microscopic confirmation of a meningioma showing different subtypes/variants (listed in Column 3, Table 6). Should this be accessioned as multiple primaries based on the transformation and distinctly different histologies? |
Non-malignant CNS rule M4 applies, this is a single primary. This scenerio is covered in Example 2: A meningioma 9530/0 transforms into an atypical meningioma 9539/1. |
2022 |
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20220030 | Histology--Lung: Is it acceptable to code histology as 8042/3 for a 2020 lung primary when the pathology report states only "oat cell carcinoma?" See Discussion. |
In the old 2007 Multiple Primaries/Histology rules, Lung Equivalent Terms and Definitions section, oat cell carcinoma (8042) was listed as one of the obsolete terms that was no longer recognized for small cell carcinoma. That note is not in the current 2018 Solid Tumor Manual lung chapter, and ICDO-3.2 lists oat cell carcinoma as the preferred term for code 8042/3. Would rule H4, Note 2 apply -- only one histology present, if not listed in Table 3 use ICD-O and all updates, to code oat cell carcinoma as 8042/3? |
While oat cell carcinoma is an outdated term, if that is all the pathology report states, code histology as 8042/3. Yes, Rule H4 applies: the diagnosis was a single histology. H4 instructs you to refer to the solid tumor H table, and if the term is not found there, check ICD-O and ICD-O updates. All possible histologic types that could occur in the lung may not be included in the table. |
2022 |
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20220019 | Solid Tumor Rules/Histology--Thyroid: What is the correct histology code for a papillary carcinoma, encapsulated with columnar cell features? See Discussion. |
There is an ICD-O histology code for papillary carcinoma, columnar cell (8344/3) as well as papillary carcinoma, encapsulated (8343/3). Per Rule H13, the terms “with features of” may be used to identify a subtype. Considering these two subtypes, and knowing there is no specific histology code for this combination, is the first rule that applies H17 (code the numerically higher histology code)? |
Code to papillary carcinoma, encapsulated (C73.9) (8343/3) using Solid Tumor Rules, Other Sites, Rule H11, code the histology when only one histologic type is identified. The usage of features is describing the cellular architecture of the encapsulated papillary carcinoma and does not necessarily indicate a specific histologic type. We consulted with our endocrine specialist pathologist who agrees and indicated terminology used in thryoid neoplasms is inconsistent. |
2022 |
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20220044 | Solid Tumor Rules (2018/2021)/Histology--Head & Neck: What is the histology code for a uvula (C052) primary with histology of squamous cell carcinoma, conventional (keratinizing) and p16 result is negative? See Discussion. |
The Schema ID for C051 (soft palate, NOS) and C052 (uvula) is Oropharynx (either 00100 or 00111 depending on p16). The Solid Tumor Rules Manual includes these site codes are under Table 4: Tumors of Oral Cavity and Mobile Tongue site group for histology coding. We are aware of the notes that allow coding of 8086 for keratinizing SCC, HPV-negative for sites listed in Table 5 only. However, it seems like C051 and C052 were incorrectly omitted from Table 5 (mis-categorized under Table 4). Can we code 8085 for 8086 for C051 or C052 based on p16/HPV status? |
Assign code 8071/3 for keratinizing squamous cell carcinoma. Codes 8085 and 8086 are only valid for the Head and Neck sites listed in Table 5 beginning with cases diagnosed 01/01/2022 and forward. |
2022 |
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20220026 | Solid Tumor Rules/Histology--Parotid: How is histology coded for a myoepithelial carcinoma ex-pleomorphic adenoma of the parotid? |
Patient has a 2021 left parotidectomy showing myoepithelial carcinoma ex-pleomorphic adenoma. Is this coded to myoepithelial carcinoma (8982/3) or carcinoma ex-pleomorphic adenoma (8941/3)? It is unclear how to arrive at the correct histology code using the current Solid Tumor Rules. |
Code myoepithelial carcinoma ex pleomorphic adenoma as carcinoma ex pleomorphic adenoma (CXPA) (8941/3) using Head and Neck Solid Tumor Rule H1 as this is a single histology. The WHO Classification of Head and Neck Tumors, 5th ed., describes CXPA as a rare epithelial and/or myoepithelial malignance arising in association with a primary or recurrent pleomorphic adenoma. The histologic type of the carcinoma component is usually recorded, in this case, myoepithelial carcinoma. |
2022 |
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20220046 | First Course Treatment/Immunotherapy--Other Therapy: Should IMC-A12 (Cixutumumab) be coded as Immunotherapy/Biological Response Modifier (BRM) treatment? See Discussion. |
IMC-A12 (Cixutumumab) is listed as a BRM agent in SEER*Rx, but the Remarks section indicates it should be coded as Other Therapy until there is FDA approval. It is unclear if FDA approval was ever given for this agent. We are mainly seeing it given for prostate primaries. |
Code Cixutumumab as Other Therapy. Cixutumumab is still in clinical trials and not approved by FDA yet. Though it is classified as an immunotherapy agent, it is not approved. |
2022 |
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20220024 | Update to Current Manual/Residence at diagnosis: Would an exchange student be a temporary resident of the SEER area or a non-resident? See Discussion. |
A 17 year old exchange student was brought into the hospital with appendicitis. The patient had an appendectomy; there was no follow up treatment. 5/27/2006 pathology report of vermiform appendix: Adenocarcinoid appendix <5 mm tumor limited to appendix. The patient has no record in Lexis Nexus and no social security number. The address is a post office box; additionally, the patient’s birthplace is Switzerland and is lost to follow up. |
Code the residence where the student is living for exchange students temporarily living in the U.S. Code the temporary address if known or the Post Office Box if unknown. We will add this scenario to the next release of the SEER manual. |
2022 |
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20220038 | Solid Tumor Rules/Histology--Thyroid: What is the histology code for sclerosing mucoepidermoid carcinoma with eosinophilla in the left thyroid and papillary thyroid carcinoma in the right thyroid? See Discussion. |
The left thyroid lobectomy/isthmusectomy returned a diagnosis of sclerosing mucoepidermoid carcinoma with eosinophina, 6.5 cm, replacing nearly the entire left lobe of the thyroid. The patient has a completion thyroidectomy of the right lobe and returned the diagnosis of papillary thyroid carcinoma, 0.5 mm, in maximum dimension. The endocrinologist describes it as "co-exsisting" and states the tumor is iodine non-avid. |
Abstract two primaries and assign code 8260/3 (papillary adenocarcinoma, NOS) to the right thyroid using Solid Tumor Rules, Other Sites, Rule H14, and 8430/3 (mucoepidermoid carcinoma) to the left thyroid as these are separate tumors with different histology types according to WHO Classification of Tumors of Endocrine Organs, 4th edition. |
2022 |
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20220007 | Histology: Is there any guidance on using STRATA Oncology testing (molecular tumor profiling tests), such as StrataNGS and StrataEXP, to code SSDIs, histology, etc? I do not see anything in STR, SEER Program Manual, SINQ, or CAnswerForum. We are seeing the testing with our 2021 paths. |
We recommend that you do not use information from these molecular tumor profiling tests until they become a standard diagnostic tool. If/when that happens, we will add information to the various manuals. |
2022 | |
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20220040 | Laterality--Brain and CNS: Can Laterality be coded as 5 (midline) for a sella turcica meningioma (or tuberculum sellae meningioma) when no other statement regarding tumor laterality is documented? See Discussion. |
Laterality is often not noted for these sella turcica meningiomas; therefore, Laterality is often coded as 9 (Unknown). Because the sella turcica appears to be a midline structure in the base of the skull, is Laterality code 5 (midline) more appropriate when additional information is unavailable? |
You may assign code 5 (Paired site: midline tumor) for laterality of a meningioma of the sella turcica (C700). The 2022 SEER manual states in Laterality coding instruction 5: Assign Laterality code 5 only when the primary site is C700, C710-C714, C722-C725, C443, C445. Do not assign code 5 to sites not listed in 5.a. Note that code 9 is for paired sites and there is no information concerning laterality. Document laterality information in the appropriate text field. Note: Laterality does not factor into the CNS Solid Tumor rules. |
2022 |