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In the Hematopoetic Manual, page 22, it is states: "The use of donor leukocyte infusions for treatment of hematopoietic neoplasms, specifically leukemias, is increasing.  Abstract as bone marrow transplant when a reportable hematopoietic neoplasm is treated with donor leukocyte infusion, even if it is not listed in the treatment section of the Heme db for the specific neoplasm."  Question 20110048 in the SEER Inquiry, it is stated "Donor lymphocyte infusion (DLI) is coded as immunotherapy."  Donor lymphocyte infusion and donor leukocyte infusions are the same procedure.  Please clarify discrepancy as coding is needed for a case treated with donor lymphocytic infusion.

Under the hematopoietic data base, treatment for polycythemia vera shows chemotherapy, immunotherapy, and phlebotomy. Essential thrombocytopenia shows blood thinners, anti-clotting medications, aspirin, chemotherapy, immunotherapy, and other therapy (Anagrelide) (for essential thrombocythemia only) and watchful waiting (for asymptomatic patients). Myelodysplastic syndrome shows bone marrow transplant, chemotherapy, immunotherapy, and stem cell transplant.

SEER*RX under warfarin says: Per the 2012 Hematopoietic and Lymphoid Neoplasm Case Reportability and Coding Manual (page 10), blood thinners and/or anti-clotting agents are to be coded as treatment (Other Therapy) for the following histologies: 9740/4 Mast cell sarcoma 9741/3 Systemic mastocytosis 9742/3 Mast cell leukemia 9875/3 Chronic myelogenous leukemia BCR/ABL 1 positive 9950/3 Polycythemia vera 9961/3 Primary myelofibrosis 9962/3 Essential thrombocythemia 9963/3 Chronic neutrophilic leukemia 9975/3 Myelodysplastic/myeloproliferative neoplasm, unclassifiable.

This diagnosis is not listed in the ICD-O-3 though it is listed as code 9509/1 for this specific tumor in the 2007 WHO classification of Tumours of Central Nervous System. (See link:  http://link.springer.com/article/10.1007/s00401-007-0243-4/fulltext.html.)

The pathology diagnosis reads: Diagnosis Right Kidney, Laparoscopic Nephrectomy: 

-Renal Cell Neoplasm of Oncocytosis (pT1a, pNX See Comment and Template). 

-Surgical margins free of tumor.

Kidney, right, nephrectomy:

Tumor histologic type: Renal cell neoplasms of oncocytosis (see Note)

Sarcomatoid features (%) Not identified

Tumor size: 4 cm (greatest dimension largest tumor)

Other dimensions: 2.7 x 2.5 cm

Macroscopic extent of tumor: Limited to kidney

Focality: Multifocal

Number of tumors: 11 grossly visible, range 0.2 4 cm

Fuhrman grade: 2 of 4

Microscopic extent of tumor:

Perinephric fat invasion: Not identified

Renal sinus invasion: Not identified

Other: N/A

Renal vein involvement: Not identified

Adrenal gland present: No

Involved by tumor: N/A

Direct invasion or metastasis: N/A

Cancer at resection margin: Not identified

Location(s): N/A

Pathologic findings in nonneoplastic kidney: Multiple collections of oncocytic cells

Hilar lymph nodes present: No

Number of involved/number present: N/A

"Thank you for sending this fascinating case. In reviewing the H&E-stained slides, we recognize that multiple lesions of varying sizes are present within the specimen, some with features of oncocytoma, some with those of chromophobe RCC, and yet others with features of both. The immunohistochemical studies for CK7 performed at your institution serve to highlight this point with "mass #1" showing focal single cell staining typical of oncocytoma and "mass #2" showing a patchy and confluent staining pattern typical of chromophobe RCC. This second mass was also positive with special stain for Hales colloidal iron. As mentioned, the morphology varies somewhat in each tumor, however, every single mass is comprised of cells with eosinophilic (pink to bright red) cytopolasm. Some tumors show more tightly nested or sheet like growth, others are more tubular or microcystic. Another important feature, present on slides of renal cortex are microscopic tumorlets seemingly emanating from eosinophilic tubules. This finding, along with the presence of numerous oncocytic neoplasms is supportive of the above diagnosis. The absence of clinical features to suggest Birt-Hogg-Dube syndrome is noted. Although these tumors are not recognized in the current classification of renal tumors, we regard these neoplasms as being a distinct entity, unrelated to both oncocytoma and chromophobe renal cell carcinoma, and have applied the designation "renal tumor of oncocytosis" to such lesions (Gobbo S, et al. Renal cell neoplasms of oncocytosis have distinct morphologic, immunohistochemical, and cytogenetic profiles. Am J Surg Patholl 34:620-626, 2010). We concur that the expected behavior in these cases is one of indolence."

The patient had a partial mastectomy with final diagnosis of invasive ductal carcinoma with metaplastic stroma. Knowing that metaplastic breast carcinoma has a worse prognosis than other types of breast cancer, is metaplastic stroma a synonym for metaplastic carcinoma when used in this context?

Patient has a perihilar bile duct primary with a microscopic focus of invasive moderately differentiated adenocarcinoma arising in a large papilloma. The MP/H Rules do not address adenocarcinomas arising in a papilloma, only adenocarcinomas arising in an adenoma (or polyp). Should the histology be coded as 8140 for the invasive adenocarcinoma component? Or should the matrix principle be applied and the histology coded as a malignant glandular papilloma (8260/3)?

The 2016 WHO Classification of Tumours of the Urinary System appears to be moving away from using Fuhrman grading toward using WHO/ISUP grade. These seem like similar 4 grade staging systems; however, the SEER Manual specifically states to not use the Special Grade System table for WHO/ISUP. We are seeing the WHO/ISUP grade being used on 2016 pathology reports.

Examples of new grading for renal cell carcinomas

Histologic type: Clear cell renal cell carcinoma

Histologic grade (WHO/ISUP 2016): Grade 3 in a background of 2 (of 4).

And

Histologic type: Clear cell renal cell carcinoma

Histologic grade (ISUP): Grade 2.