gms | German Medical Science

80. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie e. V.

Deutsche Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie e. V.

20.05. - 24.05.2009, Rostock

Prevotella disiens – cause of an unilateral necrotic tonsillitis

Meeting Abstract

  • corresponding author B. Gebhardt - Universitäts-HNO Klinik, Magdeburg, Deutschland
  • K. Herrmann - Institut für Pathologie, Magdeburg, Deutschland
  • A. Roessner - Institut für Pathologie, Magdeburg, Deutschland
  • U. Vorwerk - Universitäts-HNO Klinik, Magdeburg, Deutschland

German Society of Oto-Rhino-Laryngology, Head and Neck Surgery. 80th Annual Meeting of the German Society of Oto-Rhino-Laryngology, Head and Neck Surgery. Rostock, 20.-24.05.2009. Düsseldorf: German Medical Science GMS Publishing House; 2009. Doc09hno024

doi: 10.3205/09hno024, urn:nbn:de:0183-09hno0247

Veröffentlicht: 22. Juli 2009

© 2009 Gebhardt et al.
Dieser Artikel ist ein Open Access-Artikel und steht unter den Creative Commons Lizenzbedingungen ( Er darf vervielfältigt, verbreitet und öffentlich zugänglich gemacht werden, vorausgesetzt dass Autor und Quelle genannt werden.



The species Prevotella is an anaerobic gramnegative rodshaped bacterium.

Prevotella is a normal part of the human flora. According to its enzyme profile it is possible to classify different subspecies.

Corresponding to their local position on the human mucosa they are main organisms for different infections: Prevotella disiens (pelvic and genital infections), Prevotella bivia (pelvic and genital infections), Prevotella melaninogenica (oropharyngeal infections), Prevotella intermedia (oropharyngeal infections).

A therapy with Clindamycin, Amoxicillin or Metronidazol is state of the art.

Casuistry: A 30 years old woman turned to our ambulance. She complained about Odynodysphagia, Foetor ex ore and a painful left Lymphadenitis colli.

The oropharyngeal inspection showed a fibrinous necrotic ulcus in the left Regio tonsillaris.

The therapy occurred by medication with Augmentan and a bilateral tonsillectomy. The microbiological analysis yielded large quantities of Prevotella disiens at the anaerobic culture and the normal flora of the oropharynx at the aerobic culture.

This constellation of a Prevotella disiens infection is the first case reported in literature.

The histopathology was a chronic-fibrotic and unspecific tonsillitis.

Conclusion: The most cases of unilateral necrotic tonsillitis are: carcinoma at the tonsil, Lues, Angina Plaut-Vincent and Agranulocytosis.

A Prevotella disiens infection is a rarity – but the transmission of Prevotella disiens is possible by intercourse or as a result of a lack of hygiene.