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CAP Protocol for the Examination of Cystectomy Specimens From Patients With Carcinoma of the Urinary Bladder/Treatment Effect Post Neoadjuvant Chemotherapy (BCG not included) selections

o No known presurgical neoadjuvant therapy

o Complete response: Absence of histologically identifiable residual cancer cells and extensive fibrosis of the tumor bed after presurgical neoadjuvant therapy (TRG1)

o Strong response: Predominant fibrosis of the tumor bed, with residual cancer cells occupying less than 50% of this area (TRG2)

o Weak or no response: Residual cancer cells occupying ≥50% of the tumor bed or absence of regressive changes (TRG3)

o Other (specify): _________________

SEER Coding Instruction for Site-Specific Codes for Neoadjuvant Therapy Treatment Effect - Schemas: All Other Schemas selections

0 Neoadjuvant therapy not given/no known presurgical therapy

1 Complete pathological response

Present: No viable cancer cells/no residual invasive carcinoma identified

Residual in situ carcinoma only

2 Near complete pathological response

Present: Single cells or rare small groups of invasive cancer cells

3 Partial or minimal pathological response

Present: Residual invasive cancer with evident tumor regression, but more than single cells or rare small groups of cancer cells

4 Poor or no pathological response

Absent: Extensive residual cancer with no evident tumor regression

6 Neoadjuvant therapy completed and surgical resection performed, response not documented or unknown

Cannot be determined

7 Neoadjuvant therapy completed and planned surgical resection not performed

9 Unknown if neoadjuvant therapy performed

Unknown if planned surgical procedure performed after completion of neoadjuvant therapy

Death Certificate only (DCO)

Smoldering multiple myeloma is reportable. However, it is unclear if a diagnosis of borderline smoldering multiple myeloma should be accessioned when no further follow-up with the physician is possible. The physician stated the patient, "most likely has borderline smoldering multiple myeloma, but mostly MGUS," and further noted the definition of smoldering myeloma requires at least 10% of plasma cells involved with the neoplasm and some areas of the patient's bone marrow does meet the 10% plasma cell threshold. The physician noted the patient does not need treatment because of the favorable cytogenetics and lack of organ dysfunction.

Should the term "borderline" be ignored and the case accessioned? Or is a borderline smoldering myeloma non-reportable?

The treatment regimen consisting of carfilzomib, lenalidomide, and dexamethasone (KRd) in SEER*Rx says not to code dexamethasone. I have a patient with multiple myeloma who received the KRd protocol in 2018 and the treatment regimen consisting of carfilzomib, daratumumab, and dexamethasone (KdD) (not in SEER Rx) in 2025. SEER RX says to code dexamethasone when it is given for multiple myeloma but also not to code dexamethasone when given as part of the KRd regimen (which is for multiple myeloma). I can follow the KRd instructions if that is what should take priority, but then would I code dexamethasone for the KdD regimen? KdD is not in SEER*Rx and it seems counterintuitive to code it for KdD and not for KRd.

Patient had a left thigh soft tissue mass excision on 7/24/24 and was diagnosed with superficial CD34 positive fibroblastic tumor. Margins were narrowly free of disease. Tumor size was 5.5 cm x 4.4 cm x 3.9 cm. The diagnosis was confirmed.

The bone marrow was involved by lambda-restricted atypical B-cell and plasma cell populations with MYD88 mutation. Together these populations represent 10-15% of the bone marrow cellularity. While the bone marrow biopsy pathology alone did not provide a reportable diagnosis, the oncologist clinically diagnosed this as smoldering WM in the medical record.

Is a diagnosis of smoldering WM similar to a diagnosis of smoldering multiple myeloma (MM), a reportable Heme neoplasm, since smoldering neoplasms may be considered to meet the neoplasm’s threshold in the bone marrow but is otherwise asymptomatic?