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The ABCD rule can be easily learned and rapidly calculated, and has proven to be reliable. It should be routinely applied to all equivocal pigmented skin lesions to reach a more objective and reproducible diagnosis and to obtain this assessment preoperatively.

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Definitive RT is useful for treating early-stage skin cancers where resection would result in a significant cosmetic and/or functional deficit. Postoperative RT is indicated in situations where the probability of residual disease after surgery is high and the chance of successful salvage is modest. Patients with parotid-area node metastases are optimally treated with surgery and postoperative RT.

To demonstrate the safety and effectiveness of MelaFind, a noninvasive and objective computervision system designed to aid in detection of early pigmented cutaneous melanoma. Design: A prospective, multicenter, blinded study. The diagnostic performance of MelaFind and of study clinicians was evaluated using the histologic reference standard. Standard images and patient information for a subset of 50 randomly selected lesions (25 melanomas) were used in a reader study of 39 independent dermatologists to estimate clinicians' biopsy sensitivity to melanoma. Setting: Three academic and 4 community practices in the United States with expertise in management of pigmented skin lesions.

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MCV T antigen is generally not expressed in BCC or SCC tumors from a population favored to have MCV infection, ie, those persons already given the diagnosis of MCV-positive MCC. This suggests that episodic polymerase chain reaction detection of MCV genome in BCC or SCC tumors may represent coincidental rather than causal infection, and that these tumors share other noninfectious risk factors.