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Path report reads: 7/15/2019 A. Endometrium, curettings: Serous carcinoma, high grade. B. Endometrial polyp, curettings: Serous carcinoma, high grade.

If coded to 8461/3, according to AJCC, this would not be an ideal code (since it is outdated). Also, endometrium is not included in the suggested site codes for 8461/3 according to the 8/22/2018 ICD-O-3 update.

Left Eye Conjunctiva, biopsy (01/23/2018): Conjunctival intraepithelial neoplasia moderate to severe. Is intraepithelial neoplasia moderate to severe the same as coding 8077/2?

Patient had a vulvar biopsy with final diagnosis of Extramammary Paget neoplasm (intraepithelial glandular neoplasm). No invasion identified. We are unable to contact the pathologist or physician for clarification.

Although this terminology is not listed in the ICD-O-3, web search results refer to this as a possible synonym for Paget disease with associated VIN III, which is reportable.

Example: 3/22/2017-26 year old white female seen in the emergency room with abdominal pain. Patient was diagnosed about a month ago with breast cancer. Impression: menstrual pain. In this example the patient is newly diagnosed with breast cancer, but the second hospital does not treat or diagnose the patient; pain management for a separate condition is received only. Is this patient reported due to the history of active disease?

The bone marrow biopsy proved bone marrow with blasts comprising 15-19%. Neither the pathologist nor the physician specifically diagnosed this as AML, calling this only high risk disease or early evolving AML prior to starting the patient on Vidaza.

No further information can be obtained from the pathologist or the physician for this case. Should this early evolving AML be accessioned as an additional primary per Rule M10, or is this the same MDS that is now high risk as the blast count is up to 19%, but has not yet reached the threshold of 20% blasts usually required for AML per the Hematopoietic and Lymphoid Neoplasm Database?

For example, a patient has a 2.6 cm breast tumor on MRI; a core biopsy measuring 0.7 cm is positive for infiltrating duct carcinoma. Rule #1 states "Use the largest measurement of the primary tumor from physical exam, imaging, or other diagnostic procedures before any form of treatment." However, Rule #9 seems to imply that size from an "incisional biopsy" takes precedence over imaging, even though it is known to be less than the entire tumor in size.

In the April and July 2019 updates to the Solid Tumor Rules, the term simultaneous and Note 1 indicating histologies must be the same behavior were removed from rule M10 (ductal and lobular are a single primary).

We would like to confirm that rule M10 is the correct rule to apply to this case. This case is an invasive diagnosis approximately 4.5 years after an in situ diagnosis, so it seems like M17 should apply (invasive tumor following an in situ tumor more than 60 days later are multiple primaries).

An invasive tumor following an in situ tumor more than 60 days later of the same histology is a new primary. Similarly, it seems like an invasive tumor following an in situ tumor more than 60 days later of different histologies should be a new primary.

Bone marrow, right iliac crest (aspirate smear, touch preparation, clot section and core biopsy): Hypercellular marrow (40-50%) with plasma cell neoplasm (see Comment): " No evidence of metastatic carcinoma. " Adequate iron storage.

Comment: CBC data shows normocytic anemia. Flow cytometric analysis of bone marrow detects a kappa restricted plasma cell population that expresses CD138 and CD38. CD56 is positive. CD19 and CD20 are negative. T lymphocytes are immunophenotypically unremarkable. Polyclonal B lymphocytes are detected. Blast gate is not significantly increased. Immunohistochemical stains are performed on the biopsy core and clot section for greater sensitivity and further architectural assessment with adequate controls. CD138 positive plasma cells comprise > 70% of the total cellularity. AE1/AE3 is negative. Taken together, the morphologic and immunophenotypic findings are consistent with a diagnosis of plasma cell neoplasm. Trilineage hematopoietic activity as are seen.