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Published on: February 9, 2011
Atypical mycobacterial infection in childhood: a "surgical disease'
J Akhtar1, A G Howatson, P A Raine
1Department of Paediatric Surgery and Pathology, Royal Hospital for Sick Children, Yorkhill, Glasgow, UK.
Insights
Atypical mycobacterial (AMB) infection causes pediatric lymph node enlargement. Primary excision effectively treated lymphadenitis in children, while other methods led to complications.
Area of Science:
- Pediatric Infectious Diseases
- Microbiology
- Surgical Pathology
Background:
- Atypical mycobacterial (AMB) infections are a significant cause of cervical lymphadenitis in children.
- Diagnosis can be challenging due to limitations of traditional methods.
Purpose of the Study:
- To review the clinical presentation, diagnostic challenges, and treatment outcomes of pediatric lymphadenitis caused by atypical mycobacteria.
- To evaluate the effectiveness of different surgical interventions.
Main Methods:
- Retrospective review of 17 pediatric patients treated for AMB lymphadenitis between January 1992 and December 1993.
- Analysis of clinical data, diagnostic test results (tuberculin skin test, staining, cultures), histopathology, and treatment outcomes.
- Assessment of surgical techniques including primary excision and incision/drainage.
Main Results:
- The mean age of presentation was 5.37 years, with most cases involving cervicofacial lymph nodes.
- Tuberculin skin tests were unhelpful (14/15 negative).
- Primary excision was curative in all 11 patients who underwent it.
- Incision and drainage or partial excision resulted in chronic discharging sinuses in all 6 patients.
- AMB were not consistently detected by staining (11/17) or culture (8/17 negative).
- Diagnosis relied on clinical features and histopathology in many cases.
Conclusions:
- Primary surgical excision is the most effective treatment for atypical mycobacterial lymphadenitis in children.
- Conventional diagnostic methods like tuberculin skin tests, staining, and cultures have limitations.
- Polymerase chain reaction (PCR) is being investigated for improved diagnosis in non-cultured cases.
Abstract:
Atypical mycobacterial (AMB) infection is an important cause of lymph node enlargement in children. Over the period, January 1992 to December 1993, 17 patients with lymphadenitis because of AMB infection were treated at the Royal Hospital for Sick Children in Glasgow. These case notes of the patients were reviewed. The mean age at presentation was 5.37 years (range 1.5-10.6 years). The patients had a short history (1-11 weeks) of unilateral single focus, usually cervicofacial (16/17), disease. The tuberculin skin test was not helpful in diagnosis (negative in 14/15). Primary excision was curative (11/11). Incision and drainage of an abscess or drainage with partial excision led to chronically discharging sinus in all cases (6/6). AMB were not always seen on staining (11/17) of drained or excised material and cultures were negative in eight cases. The diagnosis in the remaining patients was made on the basis of clinical features and particular histopathological patterns. We are currently assessing the use of polymerase chain reaction (PCR) techniques for making the diagnosis in non-cultured cases.
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