Papulonecrotic tuberculid - A rare skin manifestation in a patient with pulmonary tuberculosis

Papulonecrotic tuberculid (PNT), a cutaneous manifestation of tuberculosis, is rare even in areas endemic for tuberculosis such as Taiwan. Concomitant pulmonary tuberculosis is uncommon in patients with PNT. We describe a pat ient with rare skin manifestations and simultaneous pulmonary; tuberculosis . This 48-year-old woman had suffered from productive cough for 4 months, a nd pea-sized papules with central umbilication were noted ol er the extenso r surface of her four extremities and lower abdomen 1 month prior to admiss ion to our hospital. Chest roentgenography shelved reticulonodular lesions with small cavitation over the lower right lung field, and sputum culture y ielded Mycobacterium tuberculosis complex. PNT was diagnosed using the skin biopsy results and the papules healed with scar formation after antituberc ulous therapy.