A surgeon is a specialist who consults, diagnoses and treats patients for pathologies of the abdominal cavity and, if necessary, prescribes a range of diagnostic tests, including sonography, magnetic resonance imaging, computed tomography, and endoscopic tests. He also consults, diagnoses and treats diseases such as: rosacea, skin abscesses, furuncles (so-called shunts, caused by bacteria), carbuncles (so-called malignancies, a more severe variant of shunts), various other infections of the skin and the subcutaneous tissues, ingrown toenails, hidradenitis (inflammation of the sweat glands due to minor lesions on the skin, etc.), and a variety of wounds.