Primary Tubercular Abscess of Thigh in Infancy.

We report two infants who presented with inflammatory thigh swelling in first 6 months of life. BCG scar was seen over left upper arm in both. Mantoux test, chest X-ray and family screening were normal in both infants. Ultrasonography confirmed an intramuscular abscess in one child and subcutaneous abscess in the others. Histopathology showed granulomatous inflammation with caseous necrosis suggestive of tuberculosis (Fig. 1). TB culture from the abscess aspirate was positive only in one child. Surgical incision and drainage was performed in both infants, followed by standard anti-tubercular treatment for 6 months with full recovery. Both babies recovered completely after standard treatment and were normal on follow-up till 18-24 months.