RT Book, Section A1 Greenberg, Raymond S. A2 Greenberg, Raymond S. SR Print(0) ID 1108589858 T1 Patterns of Occurrence T2 Medical Epidemiology: Population Health and Effective Health Care, 5e YR 2014 FD 2014 PB McGraw-Hill Education PP New York, NY SN 978-0-07-182272-5 LK accessbiomedicalscience.mhmedical.com/content.aspx?aid=1108589858 RD 2024/10/09 AB A 62-year-old healthy female office manager with fair skin visited her dermatologist for the evaluation of a recently appearing itchy black mole on her left thigh. Upon examination, the mole was approximately 8 mm in diameter with an asymmetrical shape, irregular borders, black and brown coloration, and a flat surface. An excisional biopsy with 1-cm surgical margins was performed revealing a superficial spreading melanoma of 0.6-mm thickness without ulceration or evidence of rapid cell division. There was no disease spread beyond the primary anatomic site, and the patient was followed with regular examinations, which revealed no recurrence or spread during the following 5 years.