Pattern of tuberculous lymphadenitis diagnosed by fine needle aspiration cytology at the University College Hospital, Ibadan, Nigeria

Sammendrag

Nigeria currently carries a high burden of tuberculosis, with an associated increasing incidence of extrapulmonary tuberculosis, with the lymph node being one of the most frequently affected sites. This 10 year (1996-2005) retrospective study was carried out to determine the prevalence of tuberculous lymphadenitis in patients at the Fine Needle Aspiration Cytology Clinic of the Department of Pathology, University College Hospital, Ibadan, Nigeria. In all, a total of 1,120 lymph node aspirates were examined, out of which 285 (25.45%) were reported as tuberculous lymphadenitis. One hundred and forty-eight (51.9%) were males while 137 (48.1%) were females. The age group of 10-19 years had the highest prevalence of 80 (28.1%), followed by those of 0-9 years with 75 (26.3%) and 20-29 years with 62 (21.8%). The cervical lymph nodes were the most affected sites (63.9%) followed by the supraclavicular (7.7%); submandibular (5.6%); the least affected sites being the clavicular and axillary nodes. The study concludes that tuberculous lymphadenitis is a common clinical presentation in Ibadan and it usually affects children, adolescents and young adults; with the cervical group of lymph nodes being the most commonly affected site.

Keywords: Cytology, tuberculosis, lymphadenitis, Nigeria

Résumé
De nos jours, Nigeria a le taux le plus élevé en tuberculose, avec une augmentation associée de l’incidence de la tuberculose extra-pulmonaire; les nœuds lymphatiques étant un de plus fréquent sites affectés. Cette étude rétrospective de 10 ans (1996- 2005) était faite pour déterminer le taux de tuberculose lymphadenite chez les patients de la clinique cytologique au département de pathologie, Collège Universitaire Hospitalier, Ibadan, Nigeria. Au total 1,120 nœuds lymphatiques aspires 6étaient examines, 285 (25.45%) étaient rapporte ayant la tuberculose lymphadenite. Cent quarante huit (51.9%) étaient des
males et 137 (48.1%) des femelles. Le groupe d’âge de 10-19 ans avait le taux le plus élevé de 80 (28.1%), suivit par ceux de
0-9 ans avec 75 (26.3%) et 20-29 ans avec 62 (21.8%). Les nœuds lymphatiques cervicaux étaient les sites les plus affectes
(63.9%) suivit par le supra claviculaire (7.7%); submandibulaire (5.6%); les sites les moins affectes étant les nœuds
claviculaire et axillaires. Cette étude conclut que la tuberculose lymphadenite est communément présente en Clinique à
Ibadan et habituellement affecte les enfants, adolescents et les jeunes adultes avec les nœuds lymphatiques cervicaux les sites
les plus affectés.

Correspondence: Dr. Simeon Cadmus, Department of Veterinary Public Health and Preventive Medicine, University of Ibadan, Ibadan, Nigeria. E-mail: sibcadmus@yahoo.com

pdf (engelsk)

Referanser

WHO 2007. Global tuberculosis control: sur- veillance, planning, financing. WHO report 2007. Geneva, World Health Organization (WHO/HTM.TB/2007.376). http//www.who.int/ tb/publications/ global_report/2007/en/index. html (cited 27th of April, 2008).

Salami AK and Oluboyo PO. Hospital pre- valence of pulmonary tuberculosis and co- infection with human immunodeficiency virus in Ilorin: a review of nine years (1991-1999). West Afr J Med 2002; 21 (1): 24-27.

Cadmus SIB. Molecular characterisation of human and bovine tubercle bacilli in Ibadan. PhD. Thesis. University of Ibadan, Ibadan, Nigeria, 2007; xxxi +338.

Osinusi K. Clinical and epidemiological features of childhood tuberculosis in Ibadan, Nigerian. J Paediatr. 1998; 25:15-19.

Kabra SK, Lodha R and Seth V. Tuberculosis in Children, what has changed in last 20 years. Ind J Pediatr. 2002;69 (Supp l): S5-10.

Akang EEU, Ekweozor C, Pindiga HU, et al. Childhood infections in Nigeria: an autopsy study. J Trop Med Hyg. 1993; 96: 231-236.

Gupta AK, Nayar M and Chandra M. Critical appraisal of fine needle aspiration cytology in tuberculous lymphadenitis. Acta Cytol. 1992; 36: 391-394.

Krishnaswami H, Koshi G, Kulkarni KG et al. Tuberculous lymphadenitis in south India, a histological and bacteriological study. Tubercle 1972; 53: 215-220.

Dandapat MC, Mishra BM, Dash SP, et al. Peripheral lymph node tuberculosis: a review of 80 cases. Br J Surg. 1990; 77. 8: 911-912.

Lau SK, Wei WI, Hsu C, et al. Efficacy of fine needle aspiration cytology in the diagnosis of tuberculous cervical lymphadenopathy. J. Laryngol. Otol. 1990; 104 (1): 24-27.

Kidane D, Olobo JO, Habte A, et al. Identification of the causative organism of tuberculous lymp- hadenitis in Ethiopia by PCR. J Clin Microbiol. 2002; 40: 4230- 4234.

Cadmus SIB, Oluwasola OA and Gordon SV. Molecular methods for the accurate assessment of Mycobacterium bovis infection. Int J Tuberc Lung Dis. 2005.9: 705.

Kehinde AO, Obaseki FA, Cadmus SIB, et al. Diagnosis of tuberculosis: urgent need to strengthen laboratory services. J Natl Med Assoc. 2005; 97:394-396.

Nayak S, Puranik SC, Desmukh SD, et al. Fine needle aspiration cytology in tuberculous lymphadenitis of patients with and without HIV infection. Diagn Cytopathol. 2004;31: 204-206.

Thomas JO, Adeyi OA and Amanguno H. Fine needle aspiration in the management of peripheral lymphadenopathy in a developing country. Diagn. Cytopathol 1999; 21:159-162.

Cadmus SIB, Palmer S, Okker M, et al. Molecular analysis of human and bovine Tubercle bacilli from a local setting in Nigeria. J Clin Microbiol. 2006; 44.1: 29-34.

Upleker MW, Rangan S, Weiss MG, et al. Attention to gender issues in tuberculosis control (Unresolved Issues). Int J Tuberc Lung Dis. 2001; 5: 220-224.

Ayele WY, Neill SD, Zinsstag J, et al. Bovine tuberculosis: an old disease but a new threat to Africa. Int J Tuberc Lung Dis. 2004;8: 924-937.

Nwachokor FN and Thomas JO. Tuberculosis in Ibadan, Nigeria- a 30 year review. Cent. Afr J Med. 2000; 46: 287-292.