Histopathologic examination revealed a granulomatous inflammation with Langhans giant cells. A Fite stain was negative for acid-fast bacilli. Giemsa staining failed to show any intracytoplasmic organisms. Based on the clinical and microscopic findings, a diagnosis of LV was made.
A chest x-ray film revealed two 1- to 2-mm ovoid hyperdensities in the upper and middle parts of the left lung. Direct microscopy of the sputum revealed gram-positive cocci and bacilli. The results of Ziehl-Nielsen staining of the sputum were negative, as were those of culture of the sputum and 1 part of the biopsy specimen on Löwenstein-Jensen medium. An intradermal tuberculin test revealed a reaction of 18 mm.
Earlobe Dermatitis. Arch Dermatol. 2002;138(12):1607. doi:10.1001/archderm.138.12.1607