Preparing for the OCN (Oncology Certified Nurse) exam? Diagnostics is one of the areas our deck drills hardest: 50 of its 1050 flashcards focus on diagnostics, covering topics like CRC. Try the sample questions below — every card is a real question-and-answer pair from the full deck.
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According to 2026 ACS guidelines, at what age MUST a woman of average risk begin annual screening mammography, and what is the recommendation for women aged 40-44?
Show answer →ACS recommends annual mammograms starting at age 45. Women aged 40-44 should have the opportunity to begin annual screening if they choose. By age 55, women can transition to biennial screening or continue annual. NCCN differs by recommending annual screening starting at age 40 for average risk. Exam Tip: ONCC often tests the choice period (40-44) vs the mandatory start age (45) per ACS. Distinguish between these two organizations' starting ages.
A 46-year-old patient with no family history of malignancy asks about colorectal cancer (CRC) screening. According to current guidelines, what is the appropriate recommendation for this average-risk individual?
Show answer →Per the updated 2026 guidelines (aligned with USPSTF and ACS), CRC screening for average-risk individuals now begins at age 45. Options include: 1. Stool-based tests: Annual FIT or high-sensitivity gFOBT, or sDNA-FIT (Cologuard) every 3 years. 2. Direct visualization: Colonoscopy every 10 years or CT Colography/Flexible Sigmoidoscopy every 5 years. Exam Strategy: The ONCC emphasizes the shift from age 50 to 45 for the average-risk population. Distractors often include age 50 or only if symptomatic, which are incorrect for current screening standards.
A 24-year-old female asks when to begin cervical cancer screening. Per 2026 ACS and ASCCP guidelines, what is the recommended starting age and the preferred initial screening method for an average-risk individual?
Show answer →Screening should begin at age 25. The preferred method is primary HPV testing every 5 years. If primary HPV testing is unavailable, co-testing (HPV + Cytology) every 5 years or cytology alone every 3 years is acceptable. Exam Strategy: The ONCC emphasizes the shift from starting at age 21 to age 25. Avoid distractors suggesting annual screening or starting at age 21 for average-risk patients. Clinical Pearl: Primary HPV testing is now the gold standard over cytology alone due to higher sensitivity for CIN 3.
A pathology report describes a tumor as G3. How should the nurse explain the significance of this grading to the patient compared to the clinical stage?
Show answer →Grading (G1-G4) refers to cellular differentiation—how much the tumor cells look like the normal parent tissue. G3 is poorly differentiated, meaning cells look very abnormal and tend to grow and spread faster. In contrast, Stage (TNM) refers to the anatomic extent or spread of the disease. OCN Tip: High grade often correlates with a more aggressive clinical course but does not change the anatomic stage. Distinguish between differentiation (appearance) and stage (location).
A patient with breast cancer undergoes a physical exam and CT scan before surgery. The nurse sees cT2N1M0 in the chart. What does the c prefix signify, and what timeframe does this staging cover?
Show answer →The c prefix signifies Clinical Staging. It is based on all evidence acquired BEFORE the start of primary treatment (e.g., physical exam, imaging, endoscopy, or diagnostic biopsy). Clinical staging is essential for selecting initial treatment (surgery vs. neoadjuvant therapy). Once treatment begins, the clinical stage is locked for data reporting and cannot be changed based on surgical findings. Exam Tip: Don't confuse c with p (pathological); c is your baseline for the multidisciplinary team's initial plan.
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Try 30 free OCN cards firstThe full OCN deck contains 1050 flashcards, and 50 of them focus on diagnostics. This page shows 5 free samples.
Our OCN deck dedicates 50 of 1050 cards (5%) to diagnostics — always cross-check the official ONCC exam outline for the current blueprint weighting.
Yes — the samples on this page are free, and the OCN preview page has 30 more free cards. Full access to all 1050 cards is a one-time $7.
Assessment
60 cards
Basics
140 cards
Management
420 cards
Pathology
170 cards
Pharmacology
120 cards
Procedures
50 cards
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