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Mature teratomas in the ovary are benign [9080/0].

For testis, mature teratoma in an adult is malignant (9080/3); however, mature teratoma in a child is benign (9080/0).

With regard to the thyroid issue, from the information above, the medullary carcinoma in the patient's thyroid is clearly a separate event. According to our expert pathologist consultant, "thyroid tissue is one of the many tissue types that may be seen in teratomas. When the teratoma has exclusively or predominantly thyroid tissue the term struma ovarii is used Adenoma or carcinoma of the thyroid type may be seen in this thyroid tissue. If medullary carcinoma were present in the thyroid tissue in the ovary/teratoma, there would be mention of it in the path report."

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

This case should be accessioned as two primaries per Rule M15. Code the histology for the first primary to 9698/3 [nodular histiocytic lymphoma. Per the Alternate Names section in the Heme DB, this histology is synonymous with follicular lymphoma, grade 3. Code the histology for the second primary to 9823/3 [B-cell chronic lymphocytic leukemia/small lymphocytic lymphoma].

Nodular histiocytic lymphoma does not transform into CLL/SLL (Transformations to), nor does CLL/SLL transform to nodular histiocytic lymphoma (Transformations from). Rule M15 indicates we are to use the Heme DB Multiple Primaries Calculator to determine the number of primaries in this case because none of the rules from 1-14 apply. Per the calculator, the CLL/SLL is a new primary.

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 2007 or later, accession a single primary, hepatocellular carcinoma [8170/3].

The steps used to arrive at this decision are:

Open the Multiple Primary and Histology Coding Rules Manual. Choose one of the three formats (i.e., flowchart, matrix or text) and go to the Other Sites MP rules because liver does not have site specific rules developed.

Start at the MULTIPLE TUMORS module, rule M3. The rules are intended to be reviewed in consecutive order within a module. There is one tumor with HCC and another tumor with a specific type of HCC.

Hepatocellular carcinomas vary and often display different architectural patterns such as solid, acinar and trabecular.

Code the histology as adenocarcinoma, NOS [8140/3].

For cases diagnosed 2007 or later, the steps used to arrive at this decision are:

Open the Multiple Primary and Histology Coding Rules Manual. Choose one of the three formats (i.e., flowchart, matrix or text) and go to the Colon Histology rules to determine the histology code for this case. The Module you use depends on the behavior and number of tumors identified in the primary site.

Start at the MULTIPLE TUMORS ABSTRACTED AS A SINGLE PRIMARY Module Rule H15. The rules are intended to be reviewed in consecutive order from Rule H15 to Rule H24. Stop at the first rule that applies to the case you are processing. Code the histology when only one histologic type is identified. In this case, the only histology present was adenocarcinoma, NOS [8140/3].

Rules H17 through H21 do not apply in this case because there is no malignancy arising in any of the adenomas or polyps scattered throughout the colon.

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

Apply rule PH22 to code the primary site to C779 [lymph nodes, NOS].

While the pathology does not indicate that this particular case represents a B-cell lymphoma, unclassifiable with features intermediate between DLBCL and Burkitt variant, in the Abstractor Notes section of the Heme DB for diffuse large B-cell lymphoma it does indicate that its presentation, "may have lesions in ileocecal region or jaws. Bone marrow and peripheral blood may be involved. Patients present with lymphadenopathy or mass lesions in extranodal site." This patient does have involvement of two extranodal sites and involvement of regional lymph nodes for only one of those sites.

PH22 indicates one is to code the primary site to C77.9 [lymph nodes, NOS] when lymphoma is present in multiple organs and lymph nodes that are not regional for that organ and the origin cannot be determined even after consulting the physician. There are two extranodal sites of involvement and only one chain of lymph nodes is regional to one of those sites so this rule applies.

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.

Hemophagocytic syndrome, also known as hemophagocytic lymphohistiocytosis (HLH), is not reportable. Per Appendix F, HLH is caused by an over stimulated immune system (infection, etc.). It is a clinical syndrome associated with a variety of underlying conditions. To be reportable, a child's diagnosis must state "fulminant hemophagocytic syndrome" to be reportable (9724/3). This is not the situation in this case.

"Hemophagocytic lymphohistiocytosis" is also listed in Appendix F: Non-Reportable List for Hematopoietic Diseases.

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.

Per Rule PH25, code the primary site of the diffuse large B-cell lymphoma to C649 (kidneys) and laterality to 4 (bilateral). Per PH25, code the primary site to the organ when a lymphoma is present in an and that . This patient had involvement of an organ (bilateral kidneys) as well as regional lymph nodes for that organ. The retroperitoneal lymph nodes are regional for the kidney.

The diffuse large B-cell lymphoma is an acute transformation of the chronic lymphocytic leukemia. Because the DLBCL occurred more than 21 days after the CLL, it is a new primary per Rule M10.

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 two primaries per Rule M11. Code the histology of one primary to 9680/3 [diffuse large B-cell lymphoma], the acute neoplasm. Code the histology for the second primary to 9823/3 [chronic lymphocytic leukemia/small lymphocytic lymphoma], the chronic neoplasm.

Per Rule M11, abstract as multiple primaries when both a chronic and acute neoplasm are diagnosed simultaneously or less than or equal to 21 days apart AND there is documentation of two pathology specimens, one confirming the chronic neoplasm (bone marrow biopsy) and one confirming the acute neoplasm (stomach biopsy).

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.

Per Rule M14, accession this is a single primary. Per PH27, code the primary site to C809 [unknown} and per PH1, code the histology to 9680/3 [diffuse large B-cell lymphoma].

Per Rule M14, abstract as a single primary when post-transplant lymphoproliferative disorder is diagnosed simultaneously with any B-cell lymphoma, T-cell lymphoma, Hodgkin lymphoma or plasmacytoma/myeloma.

Per PH1, code the histology of the accompanying lymphoma or plasmacytoma/myeloma when the diagnoses of post-transplant lymphoproliferative disorder and any B-cell lymphoma, T-cell lymphoma, Hodgkin lymphoma, or plasmacytoma/myeloma occur simultaneously.

Per PH27, code the primary site to C809 [unknown primary site] because there is no lymph node involvement, but there is involvement of two extranodal sites.

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.

Per the Abstractor Notes in the Heme DB, primary effusion lymphoma (PEL) is unusual in that the majority of cases arise in body cavities, such as the pleural, pericardial, and peritoneal cavities. Because there are no ICD-O-3 codes for the pleural space, pericardium, or peritoneal cavity, code the primary site to pleura C384 when the neoplasm arises in the pleural cavity, to pericardium C380 when it occurs in the pericardium, and to peritoneal cavity C482 when it occurs in the peritoneum.

Typically only one body cavity is involved. However, if multiple regions are positive for PEL as in this case, code the primary site to C809 per Rule PH27. Rule PH27 indicates one is to code the to primary site C809 when there is no evidence of lymphoma in lymph nodes AND the physician in the medical record that he/she that the lymphoma in an

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.