Uncommon association of tuberculosis with deep vein thrombosis in a child: a case report

Tuberculosis (TB) is a major global health issue, particularly in developing countries. While TB commonly affects the lungs, it can spread to nearly any organ system, leading to a range of complications. One rare extrapulmonary manifestation of TB is deep vein thrombosis (DVT), which is even more rarely reported in children. We report a case of a 13-year-old girl with progressive, painful swelling in right lower limb, accompanied by fever, cough and lymphadenopathy. Diagnostic imaging identified DVT in the right external iliac vein. Further investigation confirmed Mycobacterium tuberculosis infection. She was treated with anti-tubercular medication and therapeutic anticoagulation. Although uncommon, this case underscores the importance of recognizing this serious complication and need for timely diagnosis and treatment.