11-14-2025
- 2/20/25 Left axillary tail bx-Infiltrating Ductal Carcinoma
- 2/25/25 MRI-Biopsy-proven left breast invasive ductal carcinoma in the left 2/3:00 axis measuring up to 3.6 cm. This is inseparable from the underlying chest wall posteriorly. No lymphadenopathy. LEFT BREAST: A focus of susceptibility artifact is present in the left outer central to slightly upper breast/2-3 o’clock at far posterior depth. Surrounding this marker are clumped masses and non-mass enhancement which collectively measure 3. 6cm. This enhancement abuts and is inseparable from the underlying pectoralis muscle medially with a 2 to 3 mm fat plane laterally.
- 4/22/25 Left Lumpectomy w/ sln w/ bil breast reduction-Left breast cancer axillary tail
- 4/22/25 Left Lumpectomy-Infiltrating Ductal Carcinoma, G1, 21mm, multiple foci-3, no lvi, margins neg, 0/4 sln, pT2(m) pN0(sn)
Question: How would you assign EOD Primary Tumor?
- 100 Any size tumor Confined to breast tissue and fat including nipple and/or areola, Localized, NOS
- 200 Any size tumor Attachment or fixation to pectoral muscle(s) or underlying tumor, Deep fixation, Invasion of Pectoral fascia or muscle(s), Subcutaneous tissue, Local infiltration of dermal lymphatics adjacent to primary tumor involving skin by direct extension, Skin infiltration of primary breast including skin of nipple and/or areola
- 300 Invasion of (or fixation to) Chest wall, Intercostal or serratus anterior muscle(s), Ipsilateral rib(s) (contiguous involvement only) (see EOD Mets for noncontiguous involvement)
Answer: 100 Any size tumor Confined to breast tissue and fat including nipple and/or areola, Localized, NOS
Extent of Disease 2018 v3.2 Manual
EOD PRIMARY TUMOR
4. Pathological findings take priority over clinical findings.
- Assign the highest code representing the greatest extension/involvement pathologically (based on pathology report), when available
- If there is no applicable pathology, assign the highest code representing the greatest extension/involvement clinically. Imaging takes precedence over physical examination
- If extension/involvement is positive based on imaging and/or physical exam, but is confirmed to be negative on pathological exam, then code EOD Primary Tumor based on the pathological findings
