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CT findings state: Very lg sft tiss mass encasing pancreatic head & portion of body, splenic & portal veins, celiac axis, sup mesenteric artery & bilateral renal veins. Two components to this mass: 1) retroperitoneal mass encasing great vessels and 2) peritoneal component 10.8cm size, displaces bowel & other structures & encases vessels.

If the physician stated "this is bulky disease" would that change the EOD?

CT described hepatocellular ca involvement of the liver with nodules identified in segments 5 and 7. Would EOD-extension be coded to 30 [multiple tumors (one lobe)]?

CT chest findings: 1. There is a dominant 1 cm. nodule in the left mid lung. 2. In addition, there is a new rather dominant bilobed nodule in the left lung base. 3. Distant metastases are not identified. Four months later, a doctor's note says routine follow-up visit status post Cyber Knife stereotactic body radiation therapy for synchronous early stage non-small cell carcinomas of the left upper and left lower lobes, both Stage IA. He is medically inoperable. This situation is described as a second primary tumor in AJCC8 page 438. However, by the 2018 Lung Solid Tumor rules, this would be a single primary, per rule M7. Is that correct?

CT a/p read by radiologist shows: "Bosniak 4 cystic lesion of right kidney." Follow-up MRI a month later reads "right kidney cystic lesion with enhancing mural nodule concerning for cystic renal cell carcinoma (RCC)." Urologist consult used the same wording of "Bosniak 4 cystic lesion" and "concerning for renal cell carcinoma." Treatment discussed but due to patient health status recommended repeat imaging. Repeat CT few months later reads: "cystic right renal lesion with enhancing nodule similar to most recent prior and suspicious for cystic RCC."

Though "suspicious for cystic RCC" per latest imaging is reportable, Bosniak 4 is "clearly malignancy, ~100% malignant" by definition, so is the case actually reportable with the first CT a/p date as date of diagnosis?

CT A/P massively enlarged uterus with no distention between the vagina, cervix or proximal to mid uterus identified. Highly concerning for malignancy though distinct etiology not clear. Ovarian not favored though not excluded given lack of clearly defined fat planes between uterus and either ovary. Extensive bilateral iliac chain and periaortic/pericaval lymphadenopathy.

Trying to work through Module 7 in the Hem DB. According to the ovary site, regional lymph nodes include the iliac and the para-aortic lymph nodes. This makes me think I should use Rule PH35 (organ and regional nodes). However, using Appendix C in the Hem DB, the iliac lymph nodes are part of the pelvic C775 while the para-aortic (periaortic) are intra-abdominal C772. This makes me wonder if I should go with rule PH36 present in organ and nodes that are not regional.

Core biopsy of left breast at 2:00: Invasive ductal carcinoma, Nottingham score 6/9.

Core biopsy of left breast at 4:00: Invasive mucinous carcinoma (variant of ductal carcinoma), Nottingham score 5/9.

Post neo-adjuvant mastectomy: Main (largest tumor): Invasive ductal carcinoma, upper outer quadrant grade 2. Secondary tumor: mucinous carcinoma, grade 1 at 4:00.

Consolidation of the case: The operating hospital stated: SOFT TISSUE: Resection: Procedure: Radical resection Other: Pneumonectomy Tumor Site: Right pulmonary artery - They used code C383 (mediastinum NOS).  The consulting hospital stated: Lung, right, pneumonectomy: High grade sarcoma consistent with intimal sarcoma; tumor involves pulmonary artery.  They used code C449 (other soft tissue NOS).  Would C493 (soft tissue thorax) be correct?

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.

Collaborative Stage manual, page 26

Rule 4a: "always code size of the primary tumor, not size of the polyp, ulcer, cyst or distant metastasis."

Rule 4e: Additional rule for breast primaries: Example: Duct carcinoma in situ covering a 1.9 cm area with focal areas of invasive ductal carcinoma. Record the tumor size as 1.9 cm.

Code 9920/3 is not included under rule M3. However, disease process knowledge would indicate that because the patient has an underlying AML subtype, the leukemia cutis is due to the AML cells that have migrated into the skin tissue. This appears to be a single advanced disease process essentially diagnosed simultaneously.