SEER Inquiry System - Search

Solid Tumors Rules/Histology--Head and Neck:  How is histology coded for head and neck primaries when a tumor is diagnosed as an invasive squamous cell carcinoma with multiple subtypes?  See Discussion.

Stage-related Data Item/Lymphovascular Invasion--Ovary: The 2018 SEER Program Coding and Staging Manual states that LVI is coded 8 (Not applicable) for Ovary (Schema 00551). What is the reason for having lymphovascular invasion (LVI) coded "8" for Ovary? See Discussion.

Summary Stage 2000--Colon: How should this field be coded for involvement of "pericolonic fat, NOS" when there is no mention of whether the fat is sub-serosal or supra-serosal? See Description.

Summary Stage 2000--Lymphoma: How is SEER SS2000 coded for an ocular adnexal lymphoma when it extends from the primary site to adjacent sites that are still orbital structures? See Discussion.

Summary Stage 2000--Melanoma: How should Summary Stage 2000 be coded for 2014+ diagnosed melanoma cases with satellite nodules or in transit metastases? See discussion.

Summary Stage 2018--Lung: Are ground-glass lung nodules coded as distant for Summary Stage? See Discussion.

Summary Stage 2018--Ovary:  What is the summary stage for an ovarian primary in 2024, in which the ovary capsule was ruptured with surgical spill? See Discussion.

Summary Stage 2018/EOD 2018--Colon: Does the 2018 SEER Summary Staging Manual, Digestive System Sites, Distinguishing In Situ and Localized Tumors for the Digestive System, #1. b., Exception, include in situ plus intramucosal carcinoma (involvement of the lamina propria and may involve but not penetrate through the muscularis mucosa) (penetration through the muscularis mucosa is behavior code 3.)? This seems to be in conflict with Extent of Disease (EOD) 2018. See Discussion.

Summary Stage 2018/EOD 2018--Lymphoma Orbital Adnexa: What is the correct Summary Stage 2018 (SS2018) for the site/histology Orbit, NOS (C696), 9699/3? In SEER*RSA, Extent of Disease (EOD) Primary Tumor references code 7 (Distant), whereas SS2018 assigns code 2 (Regional)? See Discussion.

Summary Stage 2018/EOD 2018: How should SEER Summary Stage 2018 be coded for a 2018 thymus primary which has mediastinal fat invasion without mediastinal pleural involvement? See Discussion.