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Background  Even though remarkable progress for diagnostics of pulmonary TB has been made, it is still a challenge to establish a definitive diagnosis for extrapulmonary TB (EPTB) in clinical practice. Among all the presentations of EPTB, cold abscesses are unusual and deceptive, which are often reported in the chest wall and spine. Subcutaneous abscess in the connective tissue of limbs is extremely rare.    Case presentation  A 48-year-old man with dermatomyositis was hospitalized because of multiple subcutaneous tuberculous abscesses in his limbs, but without pulmonary tuberculosis. Particularly, one insidious abscess appeared during anti-TB treatment due to “paradoxical reaction”. After routine anti-TB therapy, local puncture drainage and surgical resection, the patient was cured and discharged.    Conclusions  Tuberculous infection should be kept in mind for the subcutaneous abscess of immunocompromised patients, even without previous TB history. Treatment strategy depends on the suppurating progress of abscess lesions. Meanwhile, complication of newly-developed insidious abscess during treatment should be vigilant.

Multiple subcutaneous tuberculous abscesses in a dermatomyositis patient without pulmonary tuberculosis: a case report and literature review