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For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

Per Rule PH27, code the primary site to C809 [unknown primary]. According to Rule PH27 one is to code the primary site to unknown primary site C809 when there is no evidence of lymphoma in lymph nodes AND the physician documents in the medical record that he/she suspects that the lymphoma originates in an organ(s) OR multiple organ involvement without any nodal involvement.

If further workup is done and a primary site is determined, update the primary site for this case.

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.

For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

This case should be accessioned as a single primary, diffuse large B-cell lymphoma diagnosed in 2011 per Rule M7. Note 4 for Rule M7 states to change the histology code on the original abstract to the more specific histology, diffuse large B-cell lymphoma in this case. There is no time restriction for rule M7. Apply rule PH11 and code the histology as 9680/3 [DLBCL] when both DLBCL and follicular lymphoma are present in the same lymph node(s).

Ambiguous terminology is not used to code a more specific histologic type per the Heme Manual. The information submitted states only that this low grade B-cell lymphoma was "most consistent with follicular lymphoma." The term "consistent with" is an ambiguous term per SEER and cannot be used to code the histology of the 2011 neoplasm as follicular lymphoma. There was no subsequent clinical statement that this patient was diagnosed with follicular lymphoma in 2011.

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.

Although the ambiguous terminology on the pathology report is not used to code the histology to follicular lymphoma, had there been a subsequent clinical statement that this patient had follicular lymphoma, the histology would be coded to follicular lymphoma [9690/3]. A diagnosis of follicular lymphoma followed by a diagnosis of DLBCL more than 21 days later is a new primary per rule M12.

Hyalinizing trabecular neoplasm is not reportable.

Hyalinizing trabecular neoplasm, or hyalinizing trabecular tumor, is a synonym for hyalinizing trabecular adenoma [8336/0] in the ICD-O-3. The 2004 WHO classification states that "fine needle aspiration biopsy is often interpreted as papillary carcinoma because of the nuclear features in the tumor."

For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

Code the primary site to C421 [bone marrow] per the Heme DB and Rule PH30. The Primary Site(s) section in the Heme DB indicates the primary site for plasma cell myeloma is C421 [bone marrow].

The Primary Site Coding Instructions in the Heme Manual (Rule 1) states that when a specific code is listed under the Primary Site(s) section of the Heme DB it is the only primary site code that can be assigned for that leukemia, myelodysplastic syndrome or myeloproliferative syndrome. Applying the PH Rules will result in the same answer for primary site, bone marrow [C421].

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.

Code the histology to 8413/3 [eccrine adenocarcinoma]. This is the most specific code available for this diagnosis.

According to our expert pathologist advisor, "The adnexal glands in the skin, sweat (eccrine) glands and apocrine glands, all have ducts which connect the business portion of each gland to the skin surface. Some of the adnexal tumors have features of differentiation which appear to be duct-like, hence the designation 'ductal.'"

In addition, "The 'squamoid' simply indicates some degree of squamous differentiation, but doesn't alter the usefulness of [code 8413/3] because we have no way of coding anything more specific in this case anyway."

For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

Code the histology to 9950/3 [polycythemia vera], the more specific histology, per Rule PH29. Myeloproliferative syndrome is a non-specific (NOS) histology and polycythemia vera is a specific type of myeloproliferative disease.

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.

For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

This case should be accessioned as a single primary, non-Hodgkin lymphoma (previously called poorly differentiated, diffuse lymphocytic lymphoma, small cleaved cell) [9591/3] diagnosed in 1991.

Determining the number of primaries is based on the rules in effect at the time of each diagnosis. The original lymphoma was diagnosed in 1991 and the first transformation to follicular lymphoma in 2008. The pre-2010 rules for coding histology and determining multiple primaries must be applied first because the rules changed for diagnoses occurring 2010 or later. Per the Single Versus Subsequent Primaries Table, poorly differentiated, diffuse lymphocytic lymphoma, small cleaved cell [9591/3] is the same primary as follicular lymphoma [9690].

The Heme DB and Manual are used to confirm that the 2010 recurrences of follicular lymphoma, grade 1 [9695/3], and follicular lymphoma, grade 3 [9698/3], are the same primary according to the Heme Calculator check required per Rule M15. Per the Heme DB page, the diagnoses follicular lymphoma, grade 3 [9698/3] and follicular lymphoma, grade 1 [9695/3] are comparable to follicular lymphoma [9690] as stated in the section.

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.

Code the Systemic/Surgery Sequence to 7 [surgery both before and after systemic therapy] for this case.

The answers to SINQ 20091055 and 20071102 do not apply to a case diagnosed in 2013. These answers were posted prior to code 7 becoming effective in 2012.

For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

This case is not reportable. Neither plasma cell dyscrasia nor MGUS are reportable. Smoldering myeloma was given as a possible diagnosis, but never confirmed.

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.