SEER Inquiry System - Search

Reportability/Histology--Skin:  Is dermatofibrosarcoma protuberans (DFSP) with fibrosarcomatous overgrowth, DFSP with fibrosarcomatous component Grade 2, or DFSP with focal myxoid features (2022) reportable for 2021-2022 diagnoses?

Solid Tumor Rules/Multiple Primaries--Prostate:  How many primaries are accessioned when a 06/2022 diagnosis of prostate adenocarcinoma is followed less than one year later by a 01/2023 diagnosis of small cell carcinoma (SmCC)?  See Discussion.

Solid Tumor Rules/Multiple Primaries--Prostate: How many primaries are accessioned when a 2023 liver biopsy diagnosed metastatic small cell carcinoma (SmCC) of the prostate following a 2018 radical prostatectomy treated diagnosis of prostatic adenocarcinoma?  See Discussion.

Solid Tumor Rules/Multiple Primaries--Breast:  How many primaries are accessioned when a 2020 diagnosis of invasive ductal carcinoma treated by lumpectomy is followed by a 2023 diagnosis of invasive lobular carcinoma treated by mastectomy?  See Discussion.

Solid Tumor Rules/Multiple Primaries--Vulva: How many primaries are accessioned when a 2023 diagnosis of keratinizing squamous cell carcinoma (SCC) (8071/3) of the vulva follows a previous diagnosis of nonkeratinizing SCC (8072/3) of the vulva and the timing rule (M12) does not apply?  See Discussion.

SEER Manual/Surgery of Primary Site 2023--Breast:  What instructions should be followed when the 2023 SEER Manual Appendix C 2023 Breast Surgery Codes advise to code 1 in Surgical Procedure of Other Site for a simple bilateral mastectomy but the 2023 STORE Manual does not.  See Discussion.

SEER Manual/Reportability--Appendix:  Is low-grade appendiceal mucinous neoplasm (LAMN) with peritoneal spread followed by evidence of extraperitoneal metastatic disease reportable prior to 2022?  See Discussion.

SEER Manual/First Course Treatment--Hematologic Transplant And Endocrine Procedures:  How are Surgery of Primary Site and the Hematologic Transplant And Endocrine Procedures data items coded when patient has total abdominal hysterectomy and bilateral oophorectomy for an endometrial primary during the same procedure? Also, how would these data items be coded for a vaginal primary in a surgical scenario?  See Discussion.

SEER Manual/First Course Treatment--Radiation Treatment Modality: How is Peptide Receptor Radionuclide Therapy (PRRT), a form of molecular therapy, coded when used to treat neuroendocrine tumors? See Discussion.

SEER Manual/Laterality--Kaposi Sarcoma:  If both arms are involved with Kaposi sarcoma and no other sites, how is laterality coded?  See Discussion.