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Merkel cell carcinoma (MCC) is a highly aggressive neuroendocrine malignancy of skin origin. It is most commonly managed with upfront surgical resection which is then followed by radiotherapy as soon as possible postoperatively. Radiotherapy alone has been used in inoperable cases and in cases of patient preference to omit surgical management. MCC...
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Context 1
... mouthbite was used, and the nose was packed with gauze. A gross tumour volume (GTV) representing the recurrent nodule on the left nasal region of the maxilla was outlined; there were further expansions with a clinical tumour volume (CTV) expansion of up to approximately 5 mm and a planning target volume (PTV) expansion of up to 10 mm for the structures treated to 50 and 60 Gray as described above (Figures 2-4). Various isodose (areas receiving equal doses of radiation) washes represented in dark blue (lower percentage of the total dose), lighter blue, and yellow (higher percentage of the total dose) within the target volumes indicated by the arrows. ...
