Internal Medicine

Internal Medicine

The Clinic of Internal Medicine treats around 4,500 patients in all areas of internal medicine every year with a special focus on gastroenterology/hepatology and oncology.

As a clinic emphasizing general internal medicine, it also diagnoses and treats large numbers of patients with lung diseases, infectious diseases, endocrinological diseases (e.g. diabetes, thyroid diseases), and as yet unclear disease patterns.

In visceral medicine, the clinic works especially closely with the Clinic of General, Visceral, and Tumor Surgery and our established oncology partners.

If you or your relatives need medical assistance, we would be pleased to welcome you to our clinic.


  • Diseases of the gastrointestinal tract, liver, pancreas
  • Tumor disease (together with surgery)
  • Unclear symptoms and findings such as:
    • Weight loss
    • Anemia
    • Unclear fever
    • Unclear infections

Endoscopic procedures

  • Complete endoscopy
    • Gastroscopy
    • Ileocolonoscopy
    • Endosonography, radial and longitudinal
    • ERCP
    • Capsule endoscopy
    • Bronchoscopy
  • incl. all interventions
    • Hemostasis
    • Polypectomy
    • Papillotomy
    • Stone extraction
    • Stent
    • Full wall resections
    • Endoscopic submucosa section


  • Ultrasound, including all modern procedures
    • Contrast-enhanced ultrasound
    • Elastography
    • Interventions
  • Hydrogen breath test
  • Computed tomography, including interventional procedures
  • MRI, including interventional procedures

Prof. Guntram Lock, M.D.

Head Physician, Clinic of Internal Medicine

Prof. Guntram Lock, M.D.


  • Prof. Guntram Lock has been Head Physician, Clinic of Internal Medicine, Albertinen Hospital since 2002. His areas of expertise include: General Internal Medicine, Gastroenterology, Hepatology, Endoscopy, and Ultrasound.

  • born in Soest, Westphalia, married, three children

  • Head Physician, Clinic of Internal Medicine, Albertinen Hospital

  • Medical Director, Albertinen Hospital

  • Deputy Medical Director, Albertinen Hospital

  • Special Professor, University of Regensburg

  • Chief Senior Physician in the Clinic and Polyclinic for Internal Medicine I, University of Regensburg

  • Habilitation (post-doctoral qualification for a teaching career in higher education) "Gastrointestinal Dysfunction with Systemic Sclerosis", University of Regensburg

  • Senior Physician at the Clinic and Polyclinic for Internal Medicine I, University of Regensburg

  • Research Assistant at the Clinic and Polyclinic for Internal Medicine I, University of Regensburg

  • Assistant Physician, Internal Medicine, Josefsklinik Offenburg/Baden

  • Doctorate "Congenital Nystagmus", University of Freiburg

  • Assistant Physician, Städtisches Kinderkrankenhaus (City Children's Hospital) Nuremberg

  • Medical studies at the University of Freiburg

  • Middlesex Hospital Medical School, University of London

  • Medical studies at the University of Freiburg


  • Special professional qualifications

    • 2006: DEGUM III Instructor
    • 2000 Gastroenterology Subdivision
    • 1997: Specialist Physician in Internal Medicine with internal X-ray
    • 1990 Expertise in emergency medicine
  • Licenses to conduct advanced training

    • Common trunk internal medicine (with Emergency Room – ER) (3 years)
    • Specialist Physician in Internal Medicine (5 years)
    • Gastro focus (with Intensive Care Unit – ICU) (3 years)
  • Teaching assignment/Positions/Functions/Memberships

    • Chair: Sonography Working Group, Hamburg Internists
    • Deputy Chair: Hamburger Working Group on Gastroenterology
    • Editor: Ultrasound International Open (Thieme)
    • Member: German Society for Gastroenterology, Digestive, and Metabolic Disorders
    • Member: German Society for Ultrasound in Medicine
    • Member: North German Gastroenterology Society
    • Member: German Internal Medicine Society
    • Member/Advisory Board: Gastro League (Gastro-Liga)
  • Selected publications

    • Helmich F, Lock G. Burton's Line from Chronic Lead Intoxication. N Engl J Med 2018 Nov 8;379(19):e35    
    • Schröder C, Lock G, Schmidt C, Löning T, Dieckmann KP. Real-Time Elastography and Contrast-Enhanced Ultrasonography in the Evaluation of Testicular Masses: A Comparative Prospective Study.Ultrasound Med Biol. 2016 Aug;42(8):1807-15
    • Lock G, Schröder C, Schmidt C, Anheuser P, Loening T, Dieckmann KP. Contrast-enhanced ultrasound and real-time elastography for the diagnosis of benign Leydig cell tumors of the testis - a single center report on 13 cases. Ultraschall Med. 2014 Dec;35(6):534-9.
    • G. Lock, C. Schmidt, F. Helmich, E. Stolle, K.P. Dieckmann.Early experience with contrast-enhanced ultrasound in the diagnosis of testicular masses: a feasibility study. Urology 2011; 77(5):1049-53.
    • G. Lock, M. Dirscherl, F. Obermeier, C. M. Gelbmann, C. Hellerbrand, A. Knöll, J. Schölmerich, W. JilgHepatitis C - contamination of toothbrushes: myth or reality?J Viral Hepatitis 2006; 13: 571-573
    • G. Lock, Acute intestinal ischemiaBaillieres Best Practice and Research in Clinical Gastroenterology 2001; 15: 83 - 98
    • G. Lock, A. Holstege, B. Lang, J. SchölmerichGastrointestinal manifestations of progressive systemic sclerosisAmerican Journal of Gastroenterology 1997; 92: 763 - 771
    • G. Lock, M. Zeuner, B. Lang, R. Hein, J. Schölmerich, A. HolstegeAnorectal function in progressive systemic sclerosis: correlation with esophageal dysfunction?Diseases of the Colon and Rectum 1997; 40: 1328 - 1335
    • G. Lock, RH Straub, M. Zeuner, E. Antoniou, A. Holstege, J. Schölmerich, B. LangAssociation of esophageal dysmotility and autonomic dysfunction in systemic sclerosisJournal of Rheumatology 1998; 25: 1330 - 1335
    • G. Lock, M. Pfeifer, R.H. Straub, M. Zeuner, B. Lang, J. Schölmerich, A. HolstegeAssociation of esophageal dysfunction and pulmonary function impairment in systemic sclerosis American Journal of Gastroenterology 1998; 93: 341 - 345