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Report Produced: 09/14/2025 14:38 PM

Report Question ID Question Discussion Answer Year
20100017 MP/H Rules/Multiple primaries--Prostate: Does adenosquamous carcinoma found in the prostate represent a second primary in a patient previously diagnosed with adenocarcinoma of the prostate? See Discussion.

Patient was diagnosed many years ago with adenocarcinoma of the prostate and treated with hormonal and radiation therapy. The patient recently underwent a TURP and is found to have adenosquamous carcinoma of the prostate. The pathology report comment states squamous carcinoma of the prostate is rare and is often associated with a history of hormonal or radiation therapy. There is no information indicating a history of a squamous carcinoma in the urinary system that could have involved the prostatic urethra.

Would the MP/H rules make this a second primary with the histology of 8560/3 [adenosquamous carcinoma]?

 For cases diagnosed 2007 or later, based on the limited information available for this unusual case, abstract a second prostate primary and code the histology as adenosquamous carcinoma. Rule M3 does not apply in this case. Apply rule M10. 2010
20100083 Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned for a patient with a longstanding history of follicular cell non-Hodgkin lymphoma followed by a 2010 diagnosis of "B-cell lymphoma with prominent large cell component, compatible with primary cutaneous follicle center cell lymphoma"? See Discussion.

Patient has a history of follicular cell non-Hodgkin lymphoma dating back to the 1990s. The patient was treated with chemotherapy and bone marrow transplantation, radiation and rituximab. The patient had no evidence of recurrence. In April 2010 a lesion appeared on the side of the scalp above the left ear with a diagnosis of "B-cell lymphoma with prominent large cell component, compatible with primary cutaneous follicle center cell lymphoma." The oncology diagnosis is "primary cutaneous follicle center lymphoma."

Would the Multiple Primaries Calculator be used in this case?

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

Accession two primaries per Rule M15. Per the Multiple Primaries Calculator, primary cutaneous follicle center lymphoma [9597/3] following a diagnosis of follicular lymphoma, NOS [9690/3] is a new primary.

While the pathologic diagnosis was B-cell lymphoma "compatible with" primary cutaneous follicle center cell lymphoma and ambiguous terms cannot be used to identify a more specific histology, the physician confirmed the more specific diagnosis without ambiguous terminology. Therefore, this diagnosis should be coded.

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.

2010
20100066 MP/H Rules/Multiple Primaries--Breast: How many primaries should be accessioned if two tumors are present in the same breast, a 1.7 cm colloid carcinoma and a 1.5 cm colloid carcinoma with infiltrating ductal carcinoma? See Discussion.

If a patient has two masses in the same breast with different histology codes and different sizes, should this be accessioned as two primaries? Or should this be a single primary based on the largest tumor size or numerically higher histology code?

  1. Size 1.7 cm for the largest tumor size, but histology is colloid carcinoma. Histology code: 8480/3.

  • Size: 1.5 cm with colloid with infiltrating ductal carcinoma. Histology code 8523/3.

    		•

    For cases diagnosed 2007 or later, abstract this case as two primaries.

    Mucinous/colloid carcinoma of the breast is rare. The first tumor describes (1.7 cm) fits this criteria because the pathologist simply says mucinous carcinoma. The diagnostic criteria for mucinous carcinoma is that pools of extracellular mucin make up at least 1/3 of the volume throughout the tumor mass. If focal areas are not at least 33% mucinous, the designation is a mixed mucinous/ductal. That fits the second tumor (1.5 cm).

    For this case, you must get the histology codes for both tumors in order to use the Multiple Primary rules. Per H14 the first tumor is coded mucinous carcinoma [8480/3]. Per H17 the second tumor is coded duct carcinoma mixed with any other carcinoma [8523/3]. Now go to the MP rules. Per M12 abstract this case as multiple primaries because the ICD-O-3 histology codes are different at the second and third digit.

    		 2010
    		20100108 MP/H Rules/Histology--Brain and CNS: How is histology coded for a left occipital parietal area tumor stated to be a "low grade neuroectodermal neoplasm most consistent with neuronal tumor but lacking classic features of ganglioma" if the pathologist states the tumor is not malignant? Code 9505/0 [Ganglioglioma, benign] is the best option according to our pathology expert. He states, "There recently has been a spate of tumors called low grade glio-neuronal tumors that are not PNETs and have no propensity to become malignant." 2010
    		20100101 Multiple primaries--Heme & Lymphoid Neoplasms: Is a 10/2010 diagnosis of accelerated phase of CML following a 4/2010 diagnosis of blast phase CML a new primary? See Discussion.

    Patient was diagnosed in the blast phase of CML on a 4/2010 bone marrow biopsy. Pt failed Gleevec and progressed to the accelerated phase of CML in 10/2010.

    Is this a single primary? This is not addressed in the hematopoietic rules. If this is a multiple primary, what rule should be applied?

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

    Per Rule M2 this is a single primary because there is only a single histology represented for this case.

    Under the Alternate Names section in the Heme DB for chronic myelogenous leukemia (CML), NOS [9863/3 and chronic myelogenous leukemia, BCR-ABL1 positive [9875/3] it indicates CML-blast phase, CML-accelerated phase and CML-chronic phase are all synonyms for CML, NOS. Any combination of these terms diagnosed represents one disease process. The Gleevec was given to prevent or delay progression to the accelerated phase.

    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.

    		2010
    		20100027 Reportability: Is AIN III reportable if it arises in the perianal skin? See Discussion. Physical exam states patient has a suspicious area of anal skin. Operative findings show a raised, suspicious lesion in the right perianal region. Our interpretation of the primary site would be skin and therefore not reportable. However, the final diagnosis on the pathology report indicates "AIN III/squamous cell carcinoma with focal areas suspicious for microinvasion. "SINQ #20041056 states that AIN III is reportable. AIN III of the anus or anal canal (C210-C211) is reportable. AIN III (8077) arising in perianal skin (C445) is not reportable. 2010
    		20100018 Reportability/Heme & Lymphoid Neoplasms--Hematopoietic, NOS: Is light chain disease reportable if it is treated with chemotherapy agents? See Discussion.

    A patient was diagnosed in 2010 with light chain disease based on SPEP and urine testing. Bone marrow aspiration and biopsy were done. Flow cytometry, cytogenetic studies and FISH for plasma cell disorders are all normal. Medical oncologist states diagnosis is light chain disease. Patient was started on Revlimid, dexamethasone and Velcade.

    In reviewing the case reportability instructions, this seems to fall under Instruction 1, note 1. Immunoglobulin deposition disease, preferred term for light chain disease, is coded as 9769/1. This is normally a non-reportable diagnosis, but the patient was given cancer-directed treatment. Would this case be accessioned using the above morphology code and primary site of bone marrow [C42.1]?

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

    This case is not reportable. The histology is 9769/1 [light chain disease] in the Heme DB.

    Light chains are produced in neoplastic plasma cells (multiple myeloma) and are called Bence-Jones proteins. The physician did the cytogenetic studies and FISH to rule out plasma cell disease. 50-60% of people with Light-chain deposition disease (LCDD) have an associated lymphoproliferative disorder, most commonly multiple myeloma. The remaining patients develop LCDD in the setting of progression of monoclonal gammopathy of unknown significance (MGUS) with no evidence of neoplastic plasma cell proliferation. This patient falls in this category, MGUS, which is not reportable.

    		2010
    		20100078 MP/H Rules/Histology--Lung: How is histology coded for a diagnosis of squamous carcinoma and large cell undifferentiated neuroendocrine carcinoma? For cases diagnosed 2007 or later, apply rule H7 and code the numerically higher ICD-O-3 code, 8070/3 [Squamous cell carcinoma]. See Chart 1, the histology tree in lung equivalent terms. Large cell neuroendocrine carcinoma is histology code 8013/3. The other histology is squamous carcinoma, 8070/3. 8070/3 is higher numerically than 8013/3. 2010
    		20100052 Reportability/Primary Site: What is the reportability status and primary site for a papillary carcinoma of thyroid tissue arising in an otherwise benign mature monodermal cystic teratoma (struma ovarii)? See Discussion. Final diagnosis on the pathology report states, "One ovary showing mature monodermal cystic teratoma composed of thyroid tissue (struma ovarii)." The pathology COMMENT section states, "There is a 0.1 cm focus of thyroid tissue within the struma ovarii showing cytologic features of papillary carcinoma. This finding is likely of no clinical consequence."

    A papillary carcinoma of thyroid tissue in benign struma ovarii (mature cystic teratoma) is reportable.

    These ovarian tumors contain a diversity of tissues including hair, teeth, bone, thyroid, etc. This reportable malignancy arose in thyroid tissue within the ovarian tumor. Code the primary site to ovary. Code to the actual organ in which the cancer arose. This will keep the case in the appropriate category for surgery coding, regional nodes, staging, etc.

    		2010
    		20100098 Primary site/Histology--Heme & Lymphoid Neoplasms: How are these fields coded for a 2008 diagnosis of small B cell leukemia, most consistent with mantle cell leukemia that only involved the bone marrow? See Discussion. A bone marrow biopsy was done on 6/18/2008 and showed only small B cell leukemia, most consistent with mantle cell leukemia. ICD-O-3 does not list a histology code for small B cell leukemia or mantle cell leukemia.

    Code the histology to 9673/3 [mantle cell lymphoma] and the primary site to C421 [bone marrow].

    Mantle cell lymphoma can present in a leukemic phase. The only code available is for mantle cell lymphoma and the only primary site that could be coded would be bone marrow.

    		2010