SEER Inquiry System - Search

First Course Treatment/Radiation Therapy:  How should Lutathera be coded? CoC states XRT- Radioisotopes and SEER states Other Treatment.

Histology--Heme and Lymphoid Neoplasms: How is histology coded for a diagnosis stated as MDS/AML (myelodysplastic syndrome/acute myeloid leukemia) per the international consensus classification (ICC)?  See Discussion.

Date of diagnosis: Can a positive VMA:HVA test be used as a date of diagnosis for neuroblastoma? See Description.

Solid Tumor Rules (2018)/Histology--Lung: What is the correct histology code for minimally invasive adenocarcinoma in the lung, 8140/3 or 8256/3? See Discussion.

Histology/Behavior--Brain and CNS: How should Histology and Behavior be coded for a polymorphous low-grade neuroepithelial tumor of the young (PLNTY) arising in the brain?

First Course Treatment/Hormone Therapy--Thyroid: Is hormone replacement therapy such as levothyroxine (Synthroid) for thyroid carcinoma coded as first course of treatment? See Discussion.

Reportability--Ovary: Is ovarian mucinous borderline tumor of intestinal type (referred to as gastrointestinal type differentiation) with microinvasion reportable? If reportable, what is the histology? See Discussion.

Solid Tumor Rules/Behavior--Brain and CNS: Why was the Behavior of solitary fibrous tumor (SFT)/hemangiopericytoma, WHO Grade 1 changed from /0 to /1 in the 2025 Solid Tumor Rules (STR) updates? See Discussion.

Date of diagnosis/Ambiguous terminology--Cervix Uteri: Is the date of diagnosis of a cervical pap smear done in December 2017, that states high-grade squamous intraepithelial lesion with features suspicious for invasion, followed by a cervical biopsy in 2018 positive for squamous cell carcinoma, in 2017? Is the ambiguous term used in the cytology in 2017 (suspicious for invasion) to determine diagnosis as the SEER manual states to use the ambiguous cytology as the date of diagnosis if confirmed later.