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Patient was diagnosed with DCIS of the left breast in June 2014. The patient had a simple mastectomy with 2 axillary lymph nodes removed. The final diagnosis was intermediate to high grade ductal carcinoma in situ, predominantly micropapillary type, forming a 1.4 cm mass. No invasive carcinoma identified. Margins negative. In April 2017, the patient was found to have parietoccipital bone lesions, which were resected. The resulting diagnosis was metastatic carcinoma, morphologically consistent with breast primary " See Comment: The previous breast lesion is not available for review at the time of signout. However, the tumor is morphologically compatible with a breast primary.

SINQ 20110111 would not make this is new primary. However, it seems that rule M8 might apply. An invasive tumor following an in situ tumor more than 60 days after diagnosis is a multiple primary. See Note 2: Abstract as multiple primaries even if the medical record/physician states it is recurrence or progression of disease.

This terminology is not specifically included in either alternate names list for myelodysplastic syndrome, NOS (9989/3) or refractory anemia with excess blasts (9983/3).

Example: Bone Marrow Biopsy, Final Diagnosis: Consistent with involvement by myelodysplastic syndrome with excess blasts-2 (MDS EB-2).

Patient is an 11 month old with brain biopsy showing final diagnosis of pineal anlage tumor. How are behavior and histology coded for this rare tumor?

Patient has only a LUL tumor on imaging. The tumor board initially states, possibly a mixed tumor, likely IIIA SCC and/or IIIA or B small cell. Later, the physician refers to it as "Stage III lung cancer, mixed histology with small cell in the lymph node and squamous cell in the LUL mass." Patient has no further workup and has declined therapy.

AFS1-AFS2-frozen section control, endomyometrium; AFS3-frozen section control, subserosal intramural mass; A4-anterior cervix; A5-posterior cervix; A6-anterior cervical endometrial junction; A7-posterior cervical endometrial junction; A8-A10-anterior endomyometrium, including tumor; A11-A13-posterior endomyometrium, including tumor and adjacent mass; A14-random section subserosal mass; A15-left parametrium at margin of resection; A16-right parametrium at margin of resection; A17-A18-left ovary and fallopian tube; A19-A20-right ovary and fallopian tube. The final diagnosis includes Endometrial adenocarcinoma, favor serous carcinoma, with papillary and solid areas. Tumor involves: Cervix present, Right ovary, Left ovary, Right fallopian tube, Left fallopian tube, Right parametrium, Left parametrium.

Patient presented to hospital ED and had brain MRI that revealed 3.2 cm space occupying lesion in region of the left CPA and trigeminal vesicle nerve compatible with epidermoid tumor.

Patient had a biopsy in April 2014; pathology was reported as non-small cell carcinoma with neuroendocrine phenotype, possible large cell neuroendocrine carcinoma. The patient had five cycles of cisplatin/etoposide with no response. In May 2015, a re-biopsy at a referral institution reports poorly differentiated small cell carcinoma and states "feels that this could have been the histology all along and why patient has failed multi lines of chemo."

Pathology states: Translocation renal cell carcinoma. Comment Tumor morphology and IHC profile consistent with MiT family translocation RCC with Xp11 translocation.

Pathology report diagnosis: Urethral lesion: Intraductal carcinoma of the prostate, see microscopic. Clinical Information: Urethral Lesion/Hematura. Microscopic Description: The biopsy shows dilated ductal structures filled with anaplastic epithelium showing areas of comedo-type necrosis. The tumor cells have enlarged nuclei prominent nucleoli and mitoses are identified. Surrounding benign prostatic tissue is also present. Immunostains show that the tumor cells stain for PSA, PSAP, P504s but are negative for GATA-3. The other components of the PIN 4 stain CK5/14 and P63 stain the basal cells surrounding the tumor confirming the intraductal nature of the process. Intraductal carcinoma should not be confused with high grade PIN as the former is usually associated with high grade invasive tumor. Is this C619 and 8500/2?