Abstract
BackgroundEthiopia reported a high rate of extra-pulmonary tuberculosis (EPTB) and the cases are increasing since the last three decades. However, diagnostic evidence to initiate TB treatment among EPTB cases is not well known. Therefore, we described the epidemiology and assessed how EPTB is diagnosed in a teaching hospital in Ethiopia.MethodsWe conducted a retrospective review among all adult EPTB cases diagnosed in Yekatit 12 Hospital Medical College from 2015 to 2019. Using a standardized data abstraction sheet, we collected data from patients’ medical records on sociodemographic, sites, and laboratory diagnosis of EPTB cases.ResultsOf the 965 total TB cases, 49.8%(481) had a recorded diagnosis of EPTB during the study period. The mean age of EPTB patients was 32.9 years (SD±13.9) and 50.7% were males. Tubercular lymphadenitis (40.3%), abdominal (23.4%), and pleural TB(13.5%) were the most common sites of EPTB involvement, followed in descending order by the genitourinary, skeletal, central nervous system, abscess, breast, and laryngeal TB. We found a histopathology finding consistent with EPTB in 59.1% of cases, Acid-fast bacilli positive in 1.5%, and the rest diagnosed on radiological grounds. In the majority of cases, more than one diagnostic method was used to diagnose EPTB cases.ConclusionsNearly half of TB patients had a recorded diagnosis of EPTB that comprise heterogeneous anatomical sites. All EPTB patients were started anti-TB therapy without definitive microbiology results. This indicates the diagnostic challenge of EPTB faced in our setting and proves to be significant for TB control in Ethiopia.
Highlights
Pulmonary tuberculosis (PTB), which affects the lung, accounts for 85% of reported TB cases worldwide [1]
We found a histopathology finding consistent with extra-pulmonary TB (EPTB) in 59.1% of cases, Acid-fast bacilli positive in 1.5%, and the rest diagnosed on radiological grounds
All EPTB patients were started anti-TB therapy without definitive microbiology results. This indicates the diagnostic challenge of EPTB faced in our setting and proves to be significant for TB control in Ethiopia
Summary
Pulmonary tuberculosis (PTB), which affects the lung, accounts for 85% of reported TB cases worldwide [1]. Since the EPTB affects virtually any organ and produces a wide spectrum of clinical manifestations, involves inaccessible sites, and the affected body fluids (mainly pleural and peritoneal) are paucibacillary in nature, it causes challenges in effective disease diagnosis and management [6]. These patients are commonly treated for other alternative diagnoses during their first visit to the health care facilities, which is mainly in primary health care settings.
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