SEER Inquiry System - Search

Solid Tumor Rules (2018, 2021/Multiple Primaries/)--Lung: How many primaries should be reported and what M rule applies when a diagnosis of presumed adenocarcinoma in situ (AIS) of the left lung follows a known diagnosis of progressive multifocal malignant adenocarcinoma in the right lung? See Discussion.

Primary site: Is C720 the correct primary site for a diagnosis of a paraspinal neuroblastoma on autopsy in a nine month old with Noonan syndrome? See Discussion.

Reportability--Head & Neck: Is chondrosarcoma, grade 1 reportable for cases diagnosed 01/01/2021 and later? See Discussion.

Solid Tumor Rules (2018, 2021)/Histology--Melanoma: In what situation will Rule H4 be used to code the histology to regressing melanoma? See Discussion.

Solid Tumor Rules (2018, 2021)/Histology--Melanoma: In what situation will Rule H6 be used to code the histology to lentigo maligna melanoma? See Discussion.

First Course Treatment/Reason for No Surgery of Primary Site: How should we be coding Reason For No Surgery of Primary Site for cases where surgery was planned but ultimately cancelled due to progression? See Discussion.

Behavior/Summary Stage 2018--Colon: What is the correct behavior and Summary Stage for a case of intramucosal adenocarcinoma arising in tubular adenoma? AJCC states this is Tis, though SEER Summary Stagie states this is Localized (code 1). The histology is 8140/2 (adenocarcinoma in situ), but the SEER Summary Stage is Locallized.

Reportability/Histology--Ovary: Is a 2020 ovary case reportable with the positive malignant findings in adnexal cystic fluid and peritoneal washing? See Discussion.

Solid Tumor Rules (2018)/Histology--Colon: What is the histology for a 2020 pathology report final diagnosis showing invasive adenocarcinoma, poorly differentiated with signet ring cell features and signet-ring cell carcinoma in the synoptic report? See Discussion.

Solid Tumor Rules (2018)/Primary Site--Head & Neck: The instructions for Table 9 of the Head and Neck Solid Tumor Rules instruct registrars to code the primary site to C479 (Autonomic nervous system) for paragangliomas that arise in the head and neck region, but the ICD-O-3.2 provides a site-associated code for most of these tumors (C754, Carotid body and C755, Paraganglion). Which primary site is correct? See Discussion.