- Case Report
- Open Access
Idiopathic gangrene of the tongue: a case report
© licensee BioMed Central Ltd. 2009
- Received: 2 March 2009
- Accepted: 11 May 2009
- Published: 22 June 2009
Gangrene of the tongue is an extremely rare condition. We encountered a 35-year-old patient who presented with this entity.
A 35-year-old male patient from rural background presented with blackening of the tongue. Its exact cause could not be ascertained. Examination revealed it to be gangrene. It was treated with excision of the gangrenous part.
As this is a very rare condition, it is being reported with a brief review of the relevant literature. The treatment must be based on the etiology; however, if the etiology is not known, it must be symptomatic.
- Venous Drainage
- Rare Phenomenon
- Exact Etiology
- Temporal Arteritis
- Oral Tongue
The tongue is an important part of oral cavity, which helps in taste, salivation, and deglutition. Gangrene of the tongue is an extremely rare phenomenon because of its excellent blood supply. The chief blood supply to the tongue is by the lingual artery. Besides this, the ascending pharyngeal artery and the external facial artery also contribute deep branches to the tongue .
We encountered an extremely rare case of gangrene of the oral tongue, the exact etiology of which could not be ascertained. Being a rare entity, it is being reported with a brief review of the relevant literature.
A 35-year-old male of Indian origin was admitted in the casualty with complaint of blackening of the oral tongue for last three days. The patient was mentally retarded and hence, the exact history could not be ascertained. The attendants noticed a foul smell from the mouth of the patient, and on seeing the black tongue they were horrified. For this reason, they brought the patient to the hospital. There was doubtful history of repeated tongue bite by the patient himself, but there was no history of oral bleeding. There was no history of any other significant associated illness.
Histopathology of the specimen was non-specific. It reported necrosis in the specimen with specific etiology for it.
The circulatory disturbances of the tongue are extremely rare because of its rich blood supply . Lingual artery, ascending pharyngeal artery and external facial artery form a good network that supplies the tongue; hence, gangrene of the tongue is unlikely .
Gangrene of the tongue is a rare phenomenon, less than 30 cases have been reported in the literature. An important cause of gangrene of the tongue is giant cell or temporal arteritis -. This form of gangrene can be confirmed by the histopathology report. As histopathology of the specimen was non-specific in our patient, this was ruled out to be the cause.
Other reported causes of the gangrene are intra-aortic balloon pump for cardiogenic shock , self-application of an elastic rubber band , atherosclerotic arterial occlusion . These have been reported merely as sporadic case reports. None of these could be a possibility in our patient.
As the patient was mentally retarded, we were unable to glean the exact history. Based on the history of self-inflicted trauma to the tongue, we speculate that it may be the cause for the gangrene to occur. There may be impairment to the venous drainage, which appears to develop only as a consequence of an extensive posttraumatic or inflammatory edema of the floor of the mouth and tongue base . This impairment of venous drainage may result in a large acute swelling of the tongue, or to ischemia carrying a painful tongue swelling, and possibly tongue necrosis . However, we do agree that exact etiology was not known.
To conclude, gangrene of the tongue is a rare phenomenon. The treatment must be based on the etiology; however, if the etiology is not known, it must be symptomatic.
Written informed consent was obtained from the patient for publication of this case report and accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal.
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