Reportability/Solid Tumor Rules (2018)--Kidney: Should clarification (Notes) be added to Table 1 of the 2018 Kidney Solid Tumor Rules regarding the use of clear cell papillary renal cell carcinoma (8323) and sarcomatoid renal cell carcinoma (8312) as these histologies conflict with the ICD-O-3.2? See Discussion.
First, reportability of clear cell papillary renal cell carcinoma changed from 8323/3 to 8323/1. Although it does not appear the standard-setters implemented this change, note of the conflict between the ICD-O-3.2 and the Solid Tumor Rules (STR) is not included in the Implementation Guidelines or STR. The current Note for clear cell papillary renal cell carcinoma (8323) was left in Table 1, so this presumably is still reportable. It would be helpful if the conflict with ICD-O-3.2 was addressed, especially since the existing Note refers to changes made back in 2016 (not 2018 or 2021).
Second, is the term sarcomatoid renal cell carcinoma still coded as a synonym for renal cell carcinoma (8312) because sarcomatoid is referring to a pattern of differentiation or 8318 (renal cell carcinoma, sarcomatoid)? The STR, Table 1, lists sarcomatoid renal cell carcinoma as 8312, but the ICD-O-3.2 lists this as 8318. The Note in Table 1 still indicates WHO/IARC and College of American Pathologists agree that sarcomatoid carcinoma is a pattern of differentiation, not a specific subtype, of renal cell carcinoma. This appears to conflict with WHO/IARC ICD-O-3.2 Coding Table as it provides a different, specific histology code for this malignancy. How can WHO/IARC classify this both a pattern of renal cell carcinoma and a separate, specific histology?
This question was prompted from preparing SEER*Educate coding exercises. We will use the answer as a reference in the rationales.
For cases diagnosed 2021 or later, use ICD-O-3.2 to determine reportability. Use the Solid Tumor Rules to determine the number of primaries to report and the histology to code for tumors that are reportable. Do not use the Solid Tumor Rules to determine reportability.
ICD-O-3.2 was implemented by the North American standard setters as of 1/1/2021 and it is the basis for reportability for cases diagnosed as of 1/1/21. See 1.a on page 6 in the 2021 SEER manual, https://seer.cancer.gov/manuals/2021/SPCSM_2021_MainDoc.pdf
WHO 4th edition Tumors of the Urinary System has proposed ICD-O code 8323/1 for clear cell papillary renal cell carcinoma. This has not been approved for implementation by the standard setters. Continue assigning 8323/3 for clear cell papillary renal cell carcinoma.
Sarcomatoid RCC is listed as a synonym for RCC 8312/3. This is correct per WHO and our SME. Do NOT code sarcomatoid RCC to 8318/3.
Reportability/Terminology--Head & Neck: Is an "evolving" squamous cell carcinoma of the vermillion border of the left lower lip reportable?
For solid tumors, ignore the term "evolving" and apply the registry rules for reportability to this case. Squamous cell carcinoma of the vermillion border of the lower lip (C001) is reportable.
Reportability: A "gastrointestinal stromal tumor" (GIST) is not always stated to be "malignant" in the path report even though the tumor appears to meet criteria for malignancy. Is the tumor SEER reportable? See discussion.
Evaluation of Malignancy and Prognosis of Gastrointestinal Stromal Tumors: A Review. Miettinen, M. et al, Human Pathology 2002 May; 33(5) 478-83). This article states there is an increasing number of GISTs because the majority of tumors previously diagnosed as gastrointestinal smooth muscle tumors (leiomyomas, leiomyoblastomas and leiomyosarcomas) are now classified as GISTs. It states that gastrointestinal autonomic nerve tumors (GANTs) are also GISTs based on their KIT positivity and presence of KIT-activating mutations. This article also states that a GIST is probably malignant if it meets the following criteria: 1) Intestinal tumors: Maximum diameter >5 cm or more than 5 mitoses per 50 HPFs. 2) Gastric tumors: Maximum diameter >10 cm or more than 5 mitoses per 50 HPFs.
Some of the path reports that meet these criteria use the word "malignant", and others do not. Some of the cases that are not called "malignant" in the path diagnosis are signed out clinically as "malignant."
The case is reportable if a pathologist or clinician confirms a diagnosis of cancer. If there is no such confirmation, the case is not SEER reportable.
Reportability: Given that per the 2012 SEER Manual and SINQ 20120081 VIN II-III is no longer reportable, does this change exclusively apply to VIN II-III or does it also apply to AIN II-III, VAIN II-III, etc.? See Discussion.
VIN II-III was a reportable condition in the past. There was a SINQ note to that effect which is now gone from the system. Would it be better to reactivate that note and put a date reference in it so that there is documentation available to confirm this disease (and other IN II-III diseases) was previously reportable? If the note is not reactivated, could there be some indication in SINQ 20120081 of the prior reportability of this disease process?
For cases diagnosed 2021 or later, VIN II-III is reportable. Similarly, AIN II-III, VAIN II-III, etc. are reportable. For cases diagnosed 2021 or later, the primary resource for reportability is ICD-O-3.2. Squamous intraepithelial neoplasia, grade II is listed in ICD-O-3.2 as 8077/2 making it reportable. This applies to the various sites of intraepithelial neoplasia grade II including anus, vulva, and vagina.
VIN II-III is reportable based on ICD-O-3.2 which lists squamous intraepithelial neoplasia, grade II as 8077/2 making it reportable. Also see SINQ 20120094.
Reportability: Is a low-grade neuroendocrine neoplasm with gastrin expression found in a periportal lymph node reportable if the clinical impression is compatible with a gastrinoma? See Discussion.
SINQ 20110095 states that "low-grade neuroendocrine neoplasm/carcinoid tumor with expression of gastrin" is reportable. However, in this case "carcinoid tumor" is not mentioned. Is this case reportable if the expression "carcinoid tumor" is missing in the diagnosis of the pathology report? Also, does the fact that the gastrinoma was found in a lymph node affect reportability?
This is a reportable case. Code the histology as malignant gastrinoma [8153/3].
Gastrinomas are usually malignant. This one is apparently present in a metastatic site (periportal lymph node) which confirms the malignancy.
Reportability: Is a thymoma, type B3 malignant and, therefore, reportable? See Discussion.
Recent information received from a registrar/pathologist states the WHO classifies well-differentiated thymic carcinoma [8585/3] as a synonym for type B3 thymoma.
For cases diagnosed prior to 2021
Thymoma, type B3 [8585/1] is not reportable. Well-differentiated thymic carcinoma [8585/3] is reportable.
WHO lists well-differentiated thymic carcinoma as a synonym for type B3 thymoma, but indicates the behavior code differs as indicated above.
See the applicable SEER manual for cases diagnosed 2021 and later.