SEER Inquiry System - Search

Primary Site--Bladder: Does instruction #4 in the Urinary Sites Solid Tumor Rules Instructions for Coding Primary Site apply to a mix of in situ and invasive urothelial tumors?

Instruction #4: Code Urinary System NOS C689 when there are multiple non-contiguous tumors in multiple organs within the urinary system.

See Discussion.

First Course of Treatment/Surgery of Primary Site--Melanoma: How do you code UVB therapy treatment for melanoma?

SEER Manual/First Course Therapy--Neoadjuvant Therapy: How is Neoadjuvant Therapy--Treatment Effect coded for bladder cancers? The College of American Pathologists (CAP) Protocol for the Examination of Cystectomy Specimens From Patients With Carcinoma of the Urinary Bladder does not provide a clear distinction between the SEER site-specific codes for Neoadjuvant Therapy Treatment Effect for All Other Schemas, codes 2, 3, and 4, as compared to the CAP Treatment Effect Post Neoadjuvant Chemotherapy (BCG not included) categories. See Discussion.

MP/H Rules/Histology--Bladder: Can the histology for a high grade urothelial carcinoma described as having "extensive sarcomatoid dedifferentiation" be coded to sarcomatoid transitional cell carcinoma (8122/3)?

Example; TURBT, Final Diagnosis - Urothelial carcinoma, high grade. Type/grade comment: Extensive sarcomatoid dedifferentiation is present (40-50% of tumor volume).

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

Reportability--Brain and CNS: Is a colloid cyst at the foramen of Monro reportable?

Reportability--Melanoma: Is the final diagnosis for an excisional skin biopsy of "compound nevus with severe cytoarchitectural atypia and regression" reportable if a re-excision may be clinically indicated because there is an "overlap of morphology between malignant melanoma and nevi with severe atypia, and there's evidence of regression"?

Reportability--Eye: Is conjunctival intraepithelial neoplasia (CIN III) from an excision of the left eye conjunctiva reportable?

Reportability/Histology--Conjunctiva: Is low-grade conjunctival melanocytic intraepithelial lesion (LG-CMIL) with focal high-grade features of the conjunctiva (C690) reportable? If reportable, what histology should be assigned?

Primary Site: What site code best reflects the final diagnosis of a metastatic "pancreatobiliary" adenocarcinoma to the liver? See Discussion.