SEER Inquiry System - Search

Multiple Primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned and what M rule applies when a patient is diagnosed with both plasmablastic lymphoma and at least one plasmacytoma? See Discussion.

Solid Tumor Rules/Multiple Primaries: What M Rule of the updated Solid Tumor Rules, Other Sites, applies to a 2022 diagnosis of endometrial cancer, followed greater than one year later by a 2023 diagnosis of esophageal cancer with no interim evidence of tumor recurrence? See Discussion.

Solid Tumor Rules/Multiple Primaries--Breast: How many primaries should be abstracted for simultaneously diagnosed non-contiguous invasive duct carcinoma and mucinous carcinoma? Does rule M12 apply since the two histologies are on different rows of Table 3 of the Breast Solid Tumor Rules? See Discussion.

Solid Tumor Rules (2018)/Multiple primaries--Breast: How many primaries are there and how is histology coded for a breast primary showing encapsulated papillary carcinoma and Paget disease of the nipple? See Discussion.

Solid Tumor Rules (2018)/Multiple Primaries--Lung: How many primaries should be abstracted in this 2018 lung case? See Discussion.

Solid Tumor Rules (2018)/Multiple primaries--Lung: How many primaries should be reported for a patient with a March 2018 diagnosis of non-small cell carcinoma with neuroendocrine differentiation on lung biopsy (single left upper lobe tumor only) who also has a prior history of left lung squamous cell carcinoma in 2016 (treated with chemotherapy/radiation)? See Discussion.

Solid Tumor Rules (2018)/Multiple Primaries--Brain: How many primaries are there and what M Rule applies when two tumors identified in the brain are pathologically proven to be glioblastoma, IDH-wild type and anaplastic astrocytoma per the pathology report final diagnosis, but the diagnosis comment and tumor board indicates multifocal glioblastoma is favored? See Discussion.

Multiple Primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned for a patient diagnosed with therapy-related myelodysplastic syndrome (t-MDS) (9920/3) in 2015 followed by a 2020 diagnosis of myelodysplastic syndrome, NOS (MDS, NOS) (9989/3)? See Discussion.

Multiple Primaries--Breast: How many primaries should be reported when a lobular carcinoma with positive margins is followed 8 years later by a lobular carcinoma near the previous lumpectomy site? See Discussion.

Solid Tumor Rules (2018/2021)/Multiple Primaries--Corpus Uteri:  How many primaries should be reported when a hysterectomy identifies primary endometrial carcinosarcoma (8980/3) and the endometrium has a background of endometrioid intraepithelial neoplasia (EIN) (8380/2)? A tumor size is provided for the carcinosarcoma, but not the background EIN.