This issue of Surgical Pathology Clinics, edited by Dr. Vickie Jo, focused on Cytopathology. Topics include--but are not limited to--Head and Neck Cytology: HPV-Associated Carcinomas; Updates in Thyroid Cytology; Salivary Gland Cytopathology; Pulmonary Cytopathology; Updates in Effusion Cytology; Updates in Gynecologic Cytology; Diagnostic Advances in Urine Cytology; Renal Neoplasms; Pancreaticobiliary Cytology; Carcinoma of Unknown Primary; Soft Tissue Neoplasms; Primary Bone Tumors; Pediatric Cytopathology; Advances in Molecular Testing Techniques in Cytological Specimens; and Circulating Tumor Cells: Applications in Cytopathology.