Neutrophilic dermatoses like pyoderma gangrenosum (PG) are
characterized by sterile, neutrophilic, cutaneous infiltrates.
Extracutenous neutrophilic infiltrations may also be seen, but
pulmonary involvement is very rare and usually characterized by
patchy infiltrates or interstitial pneumonitis. In this case, a PG
case who had cutenous lesions and large cavitary lung nodules,
is reported. He was a 49 years old male patient whose thorax
computed tomography revealed multiple pulmonary nodules with
central necrosis. In his transbronchial and bronchial biopsies, nonspecific
inflammatory aseptic nodules were detected corresponded
to the pathologic findings of skin lesion biopsies. A dramatic
response was occured after applying corticosteroid and immunesupressive
treatment. In conclusion, cavitary pulmonary nodules of
our case were thought to be due to pulmonary involvement of PG.