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Volume 15, Number 4—April 2009
Letter

Mycobacterium colombiense and Pseudotuberculous Lymphadenopathy

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To the Editor: Mycobacterium colombiense is a new species belonging to the M. avium complex (MAC). It is characterized by a unique internal transcribed spacer sequence and causing respiratory tract and disseminated infection in HIV-infected patients in Colombia (1). We report clinical and histologic features of lymphadenopathy resulting from M. colombiense infection.

A 25-month-old girl with an unremarkable medical history was hospitalized in the pediatric department of Timone Hospital, Marseille, France, due to development of swelling in a right subclavicular lymph node over a 1-month period. A 5-day course of oxacillin, which was administered orally, had been unsuccessful in alleviating the symptoms. The patient’s general condition was excellent, and results of a physical examination were normal, with the exception of a 2-cm hard, immobile, yet painless, noninflammatory, enlarged lymph node. Due to the presence of the enlarged lymph node, a chest radiograph was performed, and results were normal. A hemogram indicated a hemoglobin concentration of 113 g/L, a leukocyte count 8.3 × 109/L consisting of 31% polynuclear neutrophils and 62% lymphocytes, and a normal blood smear. A platelet count indicated a concentration of 389 × 109/L, and the serum lactic dehydrogenase level was 440 UI/L. In addition, no biologic inflammatory syndrome was observed based on the concentration of C-reactive protein (<1 mg/L) and an erythrocyte sedimentation rate of 18 mm/h.

Fine-needle aspiration of the lymph node showed necrosis and mature, activated lymphocytes. These results suggested a possible diagnosis of lymphoma, and a surgical excision biopsy was subsequently performed. Direct microscopic examinations were carried out after results obtained by Gram and Ziehl-Neelsen staining showed that the lymph node was negative for acid-fast bacilli. Histopathologic analysis indicated epithelioid cell granulomas containing giant cells and caseous necrosis without altered leukocytes, all of which are compatible with tuberculosis. Culturing of the biopsy specimen in BACTEC broth (Becton Dickinson, Courtaboeuf, France) at 5% CO2 at 37°C yielded acid-fast bacilli after a 7-day incubation period.

After inactivating the cells and extracting the DNA by using a previously described method, we identified the isolate by PCR sequencing of the rpoB gene (2) and its demonstrated 100% sequence similarity to M. colombiense CIP108962T (1,2). Accordingly, the isolate exhibited positive urease activity, a distinctive characteristic that differentiates M. colombiense from other MAC species (1,2).

Recently, M. colombiense was shown to be responsible for an enlarged lymph node in 1 child from Spain who did not show any evidence of HIV infection (3). In that patient, histopathologic examination showed granulomatous adenitis with necrosis. We report that M. colombiense–infected lymph nodes also yield clinical and histopathologic features evocative of tuberculosis. Indeed, MAC organisms remain the most prevalent agents demonstrated in diseased lymph nodes in children (4).

Because modern molecular tools used for the description of emerging MAC species have not been available in most previous reports, the real prevalence of M. colombiense may have been underestimated. In children, M. hemophilum (5), M. avium subsp. avium (6), M. avium subsp. hominissuis (7), M. lentiflavum (8), M. bohemicum (9), and M. simiae (10) have been demonstrated to be responsible for enlarged cervical lymph nodes (Appendix Table). Because management and antimicrobial drug treatment of each of these different infections vary in terms of indication, choice of drugs, and duration, the accurate and rapid identification of the causative Mycobacterium species is absolutely necessary. This identification should use PCR sequencing of selected universal molecular targets, including the 16S rRNA and rpoB genes (2), as illustrated herein.

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Acknowledgment

This work was supported by Unité Mixte de Recherche 6236, Marseille, France.

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Katariina Vuorenmaa, Iskandar Ben Salah, Vincent Barlogis, Hervé Chambost, and Michel DrancourtComments to Author 
Author affiliations: Université de la Méditerranée, Marseille, France (K. Vuorenmaa, I. Ben Salah, M. Drancourt); Assistance Publique des Hôpitaux de Marseille–Fédération de Microbiologie Clinique Hôpital la Timone, Marseille (K. Vuorenmaa, I. Ben Salah, M. Drancourt); Hôpital d’Enfants la Timone, Marseille (V. Barlogis, H. Chambost)

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References

  1. Murcia  MI, Tortoli  E, Menendez  MC, Palenque  E, Garcia  MJ. Mycobacterium colombiense sp. nov., a novel member of the Mycobacterium avium complex and description of MAC-X as a new ITS genetic variant. Int J Syst Evol Microbiol. 2006;56:204954. DOIPubMedGoogle Scholar
  2. Ben Salah  I, Adekambi  T, Raoult  D, Drancourt  M. rpoB sequence-based identification of Mycobacterium avium complex species. Microbiology. 2008;154:371523. DOIPubMedGoogle Scholar
  3. Esparcia  O, Navarro  F, Quer  M, Coll  P. Lymphadenopathy caused by Mycobacterium colombiense. J Clin Microbiol. 2008;46:18857. DOIPubMedGoogle Scholar
  4. Zeharia  A, Eidlitz-Markus  T, Haimi-Cohen  Y, Samra  Z, Kaufman  L, Amir  J. Management of nontuberculous mycobacteria-induced cervical lymphadenitis with observation alone. Pediatr Infect Dis J. 2008;27:9202. DOIPubMedGoogle Scholar
  5. Cohen  YH, Amir  J, Ashkenazi  S, Eidlitz-Markus  T, Samra  Z, Kaufmann  L, Mycobacterium haemophilum and lymphadenitis in immunocompetent children, Israel. Emerg Infect Dis. 2008;14:14379. DOIPubMedGoogle Scholar
  6. Thegerstrom  J, Romanus  V, Friman  V, Brudin  L, Haemig  PD, Olsen  B. Mycobacterium avium lymphadenopathy among children, Sweden. Emerg Infect Dis. 2008;14:6613. DOIPubMedGoogle Scholar
  7. Bruijnesteijn van Coppenraet  LE, de Haas  PE, Lindeboom  JA, Kuijper  EJ, van Soolingen  D. Lymphadenitis in children is caused by Mycobacterium avium hominissuis and not related to ‘bird tuberculosis.’. Eur J Clin Microbiol Infect Dis. 2008;27:2939. DOIPubMedGoogle Scholar
  8. Cabria  F, Torres  MV, Garcia-Cia  JI, Dominguez-Garrido  MN, Esteban  J, Jimenez  MS. Cervical lymphadenitis caused by Mycobacterium lentiflavum. Pediatr Infect Dis J. 2002;21:5745. DOIPubMedGoogle Scholar
  9. Huber  J, Richter  E, Binder  L, Maass  M, Eberl  R, Zenz  W. Mycobacterium bohemicum and cervical lymphadenitis in children. Emerg Infect Dis. 2008;14:11589. DOIPubMedGoogle Scholar
  10. Patel  NC, Minifee  PK, Dishop  MK, Munoz  FM. Mycobacterium simiae cervical lymphadenitis. Pediatr Infect Dis J. 2007;26:3623. DOIPubMedGoogle Scholar

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Cite This Article

DOI: 10.3201/eid1504.081436

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Table of Contents – Volume 15, Number 4—April 2009

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Please use the form below to submit correspondence to the authors or contact them at the following address:

Michel Drancourt, Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes, Faculté de Médecine, 27, Blvd Jean Moulin, Marseille, CEDEX 5, France

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Page created: December 10, 2010
Page updated: December 10, 2010
Page reviewed: December 10, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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