CS Lymph Nodes--Breast: What code should be used for the the following? There is no mention of LNS clinically; the patient has neoadjuvant therapy; and the LNS are matted pathologically.
MP/H Rules/Multiple primaries--Lung: If a 1.7 cm LUL lung tumor is not treated surgically, would a 2.1 cm tumor in the same lobe three years later be a new primary? See Discussion.
MP/H Rules/Histology--Rectum: When not specifically mentioned as part of the histology, is the adenoma a second histologic type, or just a further physical description of the tumor? See Discussion.
MPH Rules/Behavior--Breast: Would a positive right axillary node following DCIS of the right breast indicate the presence of a new primary? See Discussion.
Race, ethnicity/Spanish surname or origin: If birthplace is Brazil or Portugal, patient's last name is on the Spanish Surname list, and there is no text to further clarify ethnicity, what is the correct Spanish Ethnicity code: 0 or 7? See Discussion.
CS Lymph Nodes--Breast: Now that code 50 [fixed/matted ipsilateral axillary LNS, NOS] is obsolete, how is this field coded for a case in which there are clinically matted lymph nodes, no neoadjuvant therapy, and no lymph node size on the available pathology report?
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