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Tuberc Respir Dis. 2002 Jul;53(1):27-35. Korean. Original Article. https://doi.org/10.4046/trd.2002.53.1.27
Kim SH , Chung HY , Lee GD , Shin MG , Jung TS , Jin BC , Kim HJ , You JJ , Lee JD , Hwang YS .
Department of International Medicine, Collage of Medicine, Gyeong Sang National University, Chinju, Korea. ljd@nongae.gsnu.ac.kr
Department of Radiology, Collage of Medicine, Gyeong Sang National University, Chinju, Korea.
Abstract

BACKGROUND: The paradoxical response refers to an enlargement of old lesions or unexpected new ones during apparently adequate antituberculous therapy. This response has been reported in cases of intracranial tuberculoma, tuberculous lymphadenopathy, tuberculous pleurisy and pulmonary tuberculosis. However, there are few reports on its frequency and clinical characteristics. METHOD: This study enrolled 205 patients who were treated with first line antituberculous agents for more than 6 months. We retrospectively studied 155 patients with pulmonary tuberculosis and 57 patients with pleural tuberculosis (7 patients had both) from July 1998 to March 2000. The patients were divided into the paradoxical response group and the non-paradoxical group. The clinical characteristics of the paradoxical group were investigated. Statistical analysis was done with an independent sample T-test and Chi-squared test. RESULT: 29 of the 205 patients(14.1%) had paradoxical response. Among the 29 patients, there were 19 pulmonary tuberculosis, 8 tuberculous pleurisy(2 patients had both). Paradoxical response appeared 32 days (mean 35 days in pulmonary tuberculosis, mean 25 days in tuberculous pleurisy) after the beginning of chemotherapy. The duration to regress less than half of initial chest lesion was 114 days in pulmonary tuberculosis and 124 days in tuberculous pleurisy, respectively. Most common clinical manifestation of paradoxical response patients was coughing in both pulmonary tuberculosis and tuberculous pleurisy. Male sex, high blood WBC count and high level of pleural fluid LDH were related with paradoxical response. CONCLUSION: These findings suggest that presponse usually appears 1 month and disappears within 4 months after the beginning of anti-tuberculous chemotherapy. Paradoxical response was relatively correlated with male sex, high blood WBC count and high level of pleural fluid LDH.

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