Publications by authors named "R Amornmarn"

Merkel cell carcinoma (MCC) is a rare neuroendocrine tumor of the skin initially believed to arise from the Merkel cells. In the community setting a general radiation oncologist may only encounter this pathology in a handful of cases over the course of their career. Due to the low incidence of this malignancy, few prospective randomized controlled trials have ever been conducted and therefore guidelines are based on relatively lower levels of evidence upon which the clinical recommendations are made.

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To determine the risk factors associated with the recurrence and metastasis of breast cancer after lumpectomy with postoperative radiation therapy, 112 cases were studied who had been treated during a period of 11 years at the University of Florida Health Science Center/Jacksonville. The patients were evaluated for their age, race, and clinical stage, as well as the tumor grade, stage, histological type, and node involvement. Among these cases, four (4%) recurred locally within a year of treatment; 10 (9%) cases presented with distant metastasis within three years.

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Background: Loss of chromosome 22 represents the most common chromosome abnormality (70%) in meningiomas. The remainder (30%) have a normal karyotype. Not only are the structural changes rare, they also occur simultaneously with various chromosome losses.

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A case is reported of cervical spinal cord lipoma with extension into the posterior fossa and a leading symptom of apnea. A C1-C7 laminectomy and debulking of the medullary portion of the lipoma were performed with good results. The apneic spells were completely resolved.

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A case is reported of malignant fibrous histiocytoma (MFH) of the gingiva. The 65-year-old female presented with a fast-growing mass originating from the left lower gingiva. The tumor measured 15 cm in diameter, occupying the entire oral cavity, protruding outside, and causing a mechanical airway obstruction.

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