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The patient was never treated for the 2016 diagnosis, so the 2019 diagnosis is the same tumor that has progressed. Prior SINQ 20091096 for a similar case type cited multiple primaries per the 2007 Multiple Primaries/Histology Rules, Rule M8, the same rule as the current Solid Tumor rule M17, because this is to be reported as an incidence case.

However, it seems like Solid Tumor Rule M3 would apply because a single tumor is a single primary, and behavior of the 2016 primary would then be updated from /2 to /3. It is unclear how one would advance to the Multiple Tumors module and apply M17 because there is really only a single tumor in this case.

Patient has a history of breast cancer and diffuse large B-cell lymphoma (DLBCL), both treated with chemotherapy and radiation.

On 6/26/19, bone marrow biopsy: MDS with excess blasts-2 (18% dysplastic blasts) in a normocellular marrow (overall 40% cellularity) with trilineage dysplasia. Comment: least myelodysplastic syndrome with excess blasts-2. However, an early/evolving AML cannot be completely excluded. The findings likely represent therapy-related myeloid neoplasm.

MD note on 7/15/19: Diagnosis: MDS, high grade borderline AML with complex karyotype secondary disease. Patient has high grade MDS which is bordering on AML transformation with 20% blasts by IHC and areas higher than this. This is likely secondary to the treatment she has received for her other cancers particularly pelvic radiation for her DLBCL. Given her very high IPSS score, it is likely she will eventually develop AML. No treatment given.

On 7/15/19, bone marrow biopsy: Persistent acute leukemia in a marrow with trilineage dyspoiesis and 23% blasts.

7/25/17

Part A: Left breast at 8:00, 5 CFN: Specimen type: Stereotactic biopsy. Tumor type: Ductal carcinoma in situ (DCIS), cribriform type. Tumor size: The largest focus of DCIS measures 1 mm in greatest dimension as measured on the slide. Nuclear grade: 2 (Intermediate grade). Microcalcifications: Present. Other findings: Stromal fibrosis, microcalcification and fat necrosis.

11/1/17

A. Sentinel lymph node, left: One lymph node, negative for metastatic tumor on three levels of routine H\T\E and pan cytokeratin immunohistochemical stains.

B. Left breast: Procedure: Total mastectomy with skin and nipple. Specimen Laterality: Left. Lymph Node Sampling: Yes, portion A. Specimen Integrity: Intact. Histologic Type: Extensive ductal carcinoma in situ and one focus of Invasive ductal carcinoma with mucinous features. Histologic Grade (Nottingham Histologic Score): Glandular Differentiation: Score 3 Nuclear Grade: Score 2. Mitotic Count: Score 1. Total Nottingham score 6 (grade 2, moderately differentiated). Tumor Size: 3.3 x 2 mm (0.33 x 0.2 cm) measured on slide (B3). Tumor Site: Lower inner quadrant of left breast. Tumor Focality: Unifocal. Ductal Carcinoma In Situ (DCIS): Present, cribriform, solid and micropapillary types with focal necrosis and calcifications. Size of DCIS: Number of blocks examined: Thirty (30). Number of blocks with DCIS: Thirteen (13). Lobular Carcinoma In Situ (LCIS): Not identified, Lymphovascular Invasion: Present. Perineural Invasion: Not identified. Other Findings: Changes consistent with previous biopsy site. Cysts, foci of atypical ductal hyperplasia, focal ductal hyperplasia, adenosis, stromal fibrosis and microcalcifications. Skin (epidermis): Uninvolved. Nipple: Uninvolved. Margins: 1 mm from DCIS to the closest deep margin (slide B12). At least 10 mm (1 cm) from invasive carcinoma to deep margin. Estrogen receptor (ER, clone 1D5) by immunohistochemistry performed on this material: Positive (invasive and in situ carcinoma), high intensity, in greater than 95% of carcinoma cells. Progesterone receptor (PR, clone 16) by immunohistochemistry performed on this material: Positive (invasive and in situ carcinoma), moderate intensity in about 80% of the carcinoma cells. Her 2 by FISH performed on this material: Pending, an addendum to follow. Pathologic staging: pT1aN0(sn)MX (AJCC 7th edition). Dictated by: (Pathologist), MD Intradepartmental review.

The patient has two, separate, non-contiguous tumors. One tumor is a benign meningioma and the other is a malignant oligodendroglioma.

The original plan was not to treat the asymptomatic meningioma. However, after worsening symptoms, imaging and resection proved a separate left frontal lobe malignant tumor.

Rule M5 is the only M Rule in the Malignant CNS Multiple Primary Rules, Multiple Tumors module that addresses separate non-malignant and malignant tumors. This rule provides only two criteria to follow when a malignant tumor follows a non-malignant tumor. The first criteria (for non-malignant tumor followed by malignant tumor) states:

--Patient had a resection of the non-malignant tumor (not the same tumor) OR

--It is unknown/not documented if the patient had a resection.

This patient did not have a resection of the original, separate, non-malignant tumor, but the treatment plan was known to not include a resection. Should Rule M5 also apply to cases where the patient never had treatment planned for the separate non-malignant tumor?

Colon, Rectosigmoid, and Rectum Multiple Primary Rule M7 states, Abstract multiple primaries when a subsequent tumor arises at the anastomotic site AND the subsequent tumor arises in the mucosa.

We identified tumors at the anastomotic site of previous colon primaries with no mention of mucosa in any of the available documentation. Are there any other indicators that would imply a tumor arising in the mucosa, or do we need this specific statement to apply rule M7?

Example: Patient has a history of invasive ascending colon adenocarcinoma diagnosed in October 2017 status post hemicolectomy followed by adjuvant chemo. There is no documentation of disease until August 2019 colonoscopy which shows a mass in the ileocolic anastomosis. Biopsy of the anastomotic site is positive for adenocarcinoma consistent with recurrence of the patient's colonic adenocarcinoma. There is no mention of mucosa found on the pathology report.

We previously downloaded the 8/22/2018 ICD-O-3 histology update tables which included the note, not reportable for 2018, for both of these terms (with an updated histology 8071/2). SINQ 20180020 confirms differentiated penile and vulvar intraepithelial neoplasia are NOT reportable for 2018 (as does 20160069). However, when looking at the 8/22/2018 ICD-O-3 histology update table today, the not reportable for 2018 comment has been removed and it appears these two terms are reportable. Which is correct?

11/01/2018, lung, left upper lobe, wedge resection: Invasive moderately differentiated adenocarcinoma, predominantly papillary subtype, with minor acinar and lepidic subtypes. Would this be 8260/3 since the acinar and lepidic subtypes are described as minor or would this be 8255/3 because there is papillary plus two other subtypes/variants described as subtypes?

SINQ 20180050 and 20130041 appear to have conflicting answers regarding the reportability of MBL with CLL (immuno)phenotype.

While the question content of SINQ 20180050 does not reference the CLL phenotype, it is included in the Discussion as part of the oncologist's assessment. The answer does not address the clinical diagnosis of MBL with CLL-phenotype and simply states that monoclonal B-cell lymphocytosis is not reportable.

SINQ 20130041 does include the CLL phenotype information in the primary question and it is expanded on in the discussion as present in peripheral blood. Based on that information, the answer is that it should be reportable and coded as CLL (9823/3).

Example: Patient has multiple biopsies with final diagnosis of in situ papillary urothelial carcinoma in the prostatic urethra and invasive papillary urothelial carcinoma in the bladder.

How should primary site be coded in this type of mixed in situ and invasive situation?