Tuberculosis remained one of the top ten leading cause of death worldwide. There were more than 10 million new diagnoses per year, and up to 1.2 million deaths caused by tuberculosis. Extra-pulmonary tuberculosis is defined as infection outside the lung. Tuberculous lymphadenitis is the most common site of extra-pulmonary tuberculosis, constituting around 30-50% of all cases. A unique manifestation with worsening of symptoms, called paradoxical upgrading reaction (PUR), may develop in 20-50% of patients with tuberculous lymphadenitis during the therapy. Common presentations of the PUR include swollen lymphadenitis with pain or rupture with pus. Patients may fail to complete the treatment and jeopardize the development of drug-resistant pathogen. Limited studies investigated the risk factors associated with the PUR. In our prior study, ultrasound shear wave elastography offers quantified values as the objective parameters to successfully predict the occurrence of PUR. In this study, we aim to investigate the effect of corticosteroid as an adjunct therapy to reduce the PUR from happening in patients with tuberculous lymphadenitis.
To prospectively collect the radiologic data from the initial phase till the post-treatment phase of tuberculous lymphadenitis.~To prospectively investigate the benefits of corticosteroid on reduction of paradoxical upgrading reaction in patients with tuberculous lymphadenitis based on the results of shear wave elastography.~To investigate the potential biomarker of host immunity in response to tuberculosis and predict the development of paradoxical upgrading reaction.