Practice Test Geeks(CTR) Certified Tumor Registrar Practice Test
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Abstracting & Coding Flashcards

7 cards from real CTR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. When the primary site of a tumor cannot be determined after thorough workup, which ICD-O-3 topography code is assigned?

    Answer: C80.9

    C80.9 is assigned for unknown primary site when no primary site can be identified despite workup.

  2. Which of the following is the correct sequence for assigning the primary site when a biopsy is taken from a lymph node and the pathology shows metastatic squamous cell carcinoma of unknown primary?

    Answer: Code C80.9 unknown primary

    When the primary site cannot be established, C80.9 is used regardless of histology or lymph node location.

  3. What does the AJCC TNM suffix 'yp' indicate when documented on a pathology report?

    Answer: The staging reflects post-neoadjuvant therapy pathologic findings

    The 'yp' prefix in AJCC TNM staging denotes pathologic staging performed after neoadjuvant (pre-surgical) therapy.

  4. A registrar reviews a case where surgery removed a colon tumor and 18 lymph nodes were examined, with 3 positive. How should the regional lymph node fields be coded?

    Answer: Number examined: 18, number positive: 3

    Both the total nodes examined and the number of positive nodes are recorded separately to support accurate N-category staging.

  5. Which source document takes PRIORITY when there is a conflict between the operative report and the pathology report regarding tumor size?

    Answer: Pathology report

    The pathology report takes priority over the operative report for tumor size, as it provides the definitive microscopic measurement.

  6. When abstracting a case of non-Hodgkin lymphoma, which staging system is preferred over AJCC TNM?

    Answer: Ann Arbor staging

    The Ann Arbor staging system (Lugano modification) is the standard staging system for Hodgkin and non-Hodgkin lymphomas.

  7. A tumor registrar encounters the term 'Gleason score 7 (3+4)' on a prostate pathology report. Which grade group does this correspond to?

    Answer: Grade Group 2

    Gleason score 7 (3+4) corresponds to Grade Group 2 in the 2016 WHO/ISUP Grade Group system for prostate cancer.