A Case of Squamous Cell Carcinoma of the Lung With Multiple Focal Lesions on a Thin Bullous Wall

Abstract

Background. A mass forming carcinoma associated with a bullous wall or carcinoma attached to a bullous wall have been reported. However, multiple focal carcinoma on a bullos wall is rare. We report such a case.Case. A 49-year-old man underwent partial resection of the lung, 4 years previously, because of right pneumothorax. The resected specimen showed no malignancy. After receiving treatment for pneumonia, the bulla was found to be enlarged in 1999. Bronchoscopic cytology revealed squamous cell carcinoma. Chest CT showed no mass lesion. Right upper lobectomy and mediastinal lymph node dissection were performed. Not only squamous cell dysplasia but also multiple focal squamous cell carcinomas were demonstrated on the bullous wall. Three months after resection, chest CT showed a recurrence of multiple thin-walled cystic lesions. Conclusion. This was a rare case of thin-walled cavity formation with multiple focal squamous cell carcinomas verified pathologically.