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Pathology report: Brain tumor, left side: Gliotic cortex and subcortical white matter with meningioangiomatosis (see Comment). Comment This specimen represents a meningioangiomatous lesion located in the leptomeninges that projects along the Virchow-Robin spaces into the underlying cortex. The surrounding brain parenchyma demonstrates reactive changes with astrogliosis and microgliosis. An intraparenchymal neoplasm is not seen. Meningioangiomatosis is a rare benign meningovascular hamartomatous condition and usually appears in young patients.

Pathology report 1/13/15, Histology - Transverse colon resection pathology = Invasive moderately differentiated adenocarcinoma. The invasive adenocarcinoma arises in a sessile serrated adenoma.

Surgery text indicates TAH-BSO with bilateral pelvic and paraaortic lymph node dissection. The pathology report indicates the specimen includes: Uterine corpus, cervix, bilateral ovaries and fallopian tubes, bilateral parametria. The Gross Description also indicates: Representative sections submitted in 16 cassettes as follows: A1: Anterior cervix A2: Posterior cervix A3: Full thickness anterior lower uterine segment A4: Full thickness posterior lower uterine segment A5: Tumor A6-A7: Full thickness anterior endomyometrium to include tumor A8-A10: Full thickness posterior endomyometrium with tumor A11: Representative sections of right fallopian tube and fimbria A12: Representative sections of right ovary A13: Representative sections of left fallopian tube and fimbria A14: Representative sections of left ovary A15: Right parametrial tissue A16: Left parametrial tissue A17-23: Remainder of cervix.

The patient has gastric cancer and the physician prescribed medical marijuana as treatment. SEER*Rx says marijuana is ancillary as a psychoactive cannabinoid and antiemetic and advises not to code it. The physician specifically wrote "treatment with" in the record. Should it be coded as Other (Code 1) under Other Therapy?

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 radical resection of pelvic giant cell tumor of bone in August 2012. Final diagnosis clarified that no features to suggest a frankly malignant giant cell tumor were identified.

July 2013 left upper lobe nodules were removed and found to be consistent with multifocal metastatic lung involvement with a previous pelvic giant cell tumor of bone. However, the pathology report comment specifies there are no histological high-grade features to suggest a malignancy:

While SINQ 20091087 may apply, these metastases clearly arrived in the lung by hematogenous spread. The previous SINQ note refers to a case where the implants/metastases can seed the surrounding pelvic and abdominal structures by rupture of the tumor or intraoperative tumor spillage. That type of spread is not quite the same as the current case showing tumor cells leaving the primary tumor/site and travelling through the blood to implant in the lungs.

Pathology report microscopic description: The tumor is a meningothelial neoplasm (EMA+; BCL-2 and CD34 negative) with prominent collagen deposition. Necrosis and prominent nucleoli are present; no other atypical features are seen. Mitoses are present, up to 2 per 10 high-powered fields. Final Diagnosis: Dura, bicoronal craniotomy (specimen A): Meningioma with atypical features.

There is no rule in benign brain and CNS section of Multiple Primary/Histology (MP/H) Rules stating to code the most specific histologic term when the diagnosis is (something less specific, i.e., adenocarcinoma). This rule is in other site chapters of MP/H but appears missing in the benign brain and CNS section.