Publications by authors named "Essel de Leon"

A 44-yr-old woman with menorrhagia and uterine fibroids underwent total laparoscopic hysterectomy, revealing several submucosal, intramural, and subserosal tan-white nodules in the uterus. Microscopic examination revealed tumors displaying 3 distinct morphologies: 1 tumor with features of conventional leiomyoma; 1 tumor with increased cellularity, staghorn/hemangiopericytoma-like vasculature, and occasional atypical cells with prominent red nucleoli and some perinucleolar halos suggesting a fumarate hydratase (FH)-deficient atypical leiomyoma; and 1 tumor with an admixture of epithelioid and spindled cells with the former arranged around blood vessels suggesting a perivascular epithelioid cell tumor (PEComa). Immunohistochemical studies confirmed these diagnoses by demonstrating loss of FH expression in the atypical leiomyoma and diffuse expression of HMB45 and cathepsin K in the tumor with epithelioid features.

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The mechanistic target of rapamycin (mTOR) integrates environmental inputs to regulate cellular growth and metabolism in tumors. However, mTOR also regulates T-cell differentiation and activation, rendering applications of mTOR inhibitors toward treating cancer complex. Preclinical data support distinct biphasic effects of rapamycin, with higher doses directly suppressing tumor cell growth and lower doses enhancing T-cell immunity.

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Nuclear protein in testis (NUT) midline carcinoma (NMC) is a clinically lethal malignancy affecting all age group often located in the midline structures such as mediastinum, larynx and nasopharynx. It is characterized by chromosomal translocation between chromosomes 15 and 19 with the formation of chimeric gene BRD-NUT. We present the cytologic findings of NMC including the immunohistochemical stains performed.

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Background: The Joint Commission accredits health care organisations in the USA as a prerequisite for licensure. In 2011, TJC published seven Patient Blood Management Performance Measures to improve the safety and quality of care. These Measures will provide hospital-specific information about clinical performance.

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Background And Objectives: Dialysis patients have a high burden of co-existing diseases, poor health-related quality of life (HR-QOL), and are prescribed many medications. There are no data on daily pill burden and its relationship to HR-QOL and adherence to therapy.

Design, Setting, Participants, & Measurements: Two hundred and thirty-three prevalent, chronic dialysis patients from three units in different geographic areas in the United States underwent a single, cross-sectional assessment of total daily pill burden and that from phosphate binders.

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