Oncologische Heelkunde / Surgical Oncology : 03. Because of the more frequent use of mammography and ultrasound more and more infraclinical lesions are detected in the female breast. These non palpable breast lesions present a number of questions to clinicians. In this book an answer is provided by experts in radiology, pathology, gynaecology and surgery resulting in a systematic overview of detection, diagnosis, biopsy and surgical treatment. What do we know about the biology of these lesions and what images are suspect for malignancy? Are there new radiological methods for detection and characterisation? Is there a role for fine needle aspiration or core needle biopsy and how reliable is cytology for these lesions? How to select patients for surgical biopsy or for follow-up? How to localize the lesion at surgery and how to choose between incisional and excisional biopsy? Is there a place for frozen section? What surgical techniques should be used and how to handle the specimen? What information should come out of pathology and what to do when the resection is incomplete? De derde studiedag Oncologische heelkunde van de Universitaire Ziekenhuizen Leuven (23 maart 1996) handelde rond niet-palpabele borstletsels bij vrouwen. Specialisten in radiologie, pathologie, gynaecologie en chirurgie met grote ervaring op dit gebied werden samengebracht om antwoord te zoeken op een aantal vragen bij deze materie. Hun antwoorden zijn opgenomen in dit boek met als doel een soort handleiding te creeren voor de praktijk en de verdere studie.