SEER Inquiry System - Home

Solid Tumor Rules (2018)/Multiple primaries--Bladder. Would the metastatic diagnosis indicate a new primary?  If the metastatic diagnosis indicates a new primary, would the primary site be C688 and date of diagnosis 11/14/18? See Discussion.

Solid Tumor Rules (2018)/Histology--Prostate: How is the histology coded for a diagnosis of mixed prostatic adenocarcinoma (5%) and small cell neuroendocrine carcinoma (95%) from a transurethral resection of the prostate? See Discussion.

 

Primary site/Unknown and ill-defined site--Melanoma:  What is the primary site for a case of metastatic melanoma with an unknown primary site? See Discussion.

Surgery of Primary Site/Multiple primaries--Breast: Should the Surgery of Primary Site for the 2020 diagnosis be coded 51 (Modified radical mastectomy without removal of uninvolved contralateral breast) when a partial mastectomy and axillary lymph node dissection are performed for a 2011 right breast primary and a subsequent 2020 right breast primary is treated with a total mastectomy only? 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.

Solid Tumor Rules/Multiple Primaries--Lung: How many primaries are accessioned when a patient is diagnosed with right lower lobe invasive acinar adenocarcinoma (8551/3) in 2018 and treated with lobectomy, followed by a 2019 right middle lobe cancer (NOS, 8000/3) diagnosed as new stage 1 primary by cancer conference? 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.

Reportability--Vulva: Is well differentiated vulvar intraepithelial neoplasm (dVIN) reportable? See Discussion.
 

Diagnostic confirmation--Heme & Lymphoid Neoplasms: Is Diagnostic Confirmation coded to 5 or 8 based on a patient diagnosed as multiple myeloma by a physician based on a bone marrow biopsy stating plasma cell neoplasm? See Discussion.

Reportability/Histology--Eye: Is conjunctival intraepithelial neoplasia, moderate to severe, reportable and if so, what are the histology and behavior codes? See Discussion.