Fine-needle aspiration cytology (FNAC) is a diagnostic procedure used to investigate superficial lumps or masses. This procedure is widely used in the diagnosis of cancer and inflammatory conditions. Fine Needle Aspiration Cytology: Interpretation and Diagnostic Difficulties is organised into 21 chapters covering the full spectrum of fine needle aspiration cytology, organ by organ, from head, neck and orbital, to skin, bone, and the central nervous system. Characteristic diagnostic features and differential diagnoses of a variety of lesions, along with their cytology, immunocytochemistry and molecular genetics, are discussed in depth. The book provides comprehensive, current information on the principles and techniques of fine needle aspiration cytology, enhanced by many tables, boxes and micrographs in every chapter. Access to digital slides is provided with the book. This third edition has been fully revised and updated to provide clinicians with the latest technologies and techniques in the field. A review section concluding the book enhances learning and assists self-assessment.