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SEER Inquiry System - Report
Produced: 05/15/2026 9:15 AM
Question 20100049
Inquiry Details
References:
Heme & Lymph Manual & DB
Question:
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are to be abstracted when a lymph node biopsy reveals "malignant lymphoma, peripheral T-cell type, with some features of angioimmunoblastic T-cell lymphoma and follicular T-cell lymphoma," the bone marrow biopsy was negative for involvement, and the oncologist states this patient has "peripheral T-cell lymphoma"? See Discussion.
Discussion:
CT scan showed retroperitoneal and inguinal adenopathy. Right inguinal lymph node biopsy revealed "malignant lymphoma, peripheral T-cell type, with some features of angioimmunoblastic t-cell lymphoma and follicular t-cell lymphoma." Flow cytometry studies showed no evidence of B-cell lymphoma and atypical CD3+/CD10+/CD7-/CD4+/CD56+ T cells are detected (19%). The bone marrow biopsy was negative for involvement. Patient was staged as Stage II Peripheral T-Cell lymphoma by the oncologist and started chemotherapy.
Answer:
For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.
Code the oncologist's clinical diagnosis of peripheral T-cell lymphoma.
The definition for this neoplasm is "A large group of lymphomas which we collectively refer to as peripheral T-cell lymphomas with the optional addition of "unspecified" to emphasize that these cases do not belong to any better defined entities. Attempts to distinguish between them on morphological basis have met with poor reproducibility."
Per the Abstractor Notes in the Heme DB: Patients present with peripheral LN involvement. The diagnosis of PTCL, NOS is made ONLY when other specific entities have been explored.
This fits your case; attempts to find a more specific disease (flow cytometry; BM biopsy) were negative and gave no further information that could be used to assign a more specific classification.
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.
History:
This SINQ question has been updated to the Hematopoietic & Lymphoid Neoplasm Manual & Database published January 2014.
The original answer below was written based on the rules in 2010
For cases diagnosed 2010-2011, code the oncologist's clinical diagnosis of peripheral T-cell lymphoma.
Search the 2010 Hematopoietic Database by entering the unique word "peripheral" in the search engine. The first entry in the matched term list is peripheral T-cell lymphoma, NOS. Now you have a PROVISIONAL ICD-O-3 code and diagnosis.
Confirm that this diagnosis fits the case you are abstracting. Click the display button at bottom of the screen. The definition for this neoplasm is "A large group of lymphomas with the addition of "unspecified" to emphasize that these cases do not belong to better defined entities. Attempts to identify a more specific disease were unsuccessful."
To look at the Abstractor Notes, click on Display Abstractor Notes button. Per selected parts of the information available: Patients present with peripheral LN involvement. The diagnosis of PTCL, NOS is made ONLY when other specific entities have been explored.
This fits your case; attempts to find a more specific disease (flow cytometry; BM biopsy) were negative and gave no further information that could be used to assign a more specific classification.
The answers for SINQ questions with 2010 ID numbers were written using the 2010 Heme & Lymph Manual & DB. The instructions for using the 2010 Hematopoietic Database were written for the version of the software in use as of 5/24/2011. The user interface of the web-based 2010 Hematopoietic Database available from the SEER website varies slightly from the 5/24/2011 version in that the web-based version provides all the disease information in one scrollable window.
This SINQ question has been updated to the Hematopoietic & Lymphoid Neoplasm Manual & Database published January 2014.
The original answer below was written based on the rules in 2010)
For cases diagnosed 2010-2011, access the 2010 Hematopoietic Database at http://seer.cancer.gov/tools/heme/. Click on Hematopoietic Project. Click on Hematopoietic and Lymphoid Database. For 2010-2011 diagnoses, click on the "use the 2010 database" label in the upper right corner of the screen. The 2010 Hematopoietic Coding Manual (PDF) button will appear to indicate the correct version of the program is available now for query.
