A pathology expert witness on this page is a medical professional available to advise and testify on cases relating to body-based evidence evaluations. Pathologists are specialists that deal with the study and diagnosis of diseases. They may opine on the different areas of pathology, including neuropathology, forensic pathology, dermatopathology, hematopathology, chemical pathology, cytopathology, medical microbiology, and more. They may conduct extensive evaluations and investigations through autopsy, histopathology, and cytology. Pathology expert witnesses may provide expert testimony in the event of medical negligence, physical trauma, injury, or misdiagnosis.