Lesion Mimicking Lung Tumor

A 75 year old woman was admitted for evaluation of right lung mass. She was not a smoker. She had been diagnosed as uterine prolapse and during preoperative assessment a lung mass was found incidentally on simple chest X-ray. On chest CT scan, 3.5×2 cm sized homogeneous mass was located in the anterior segment of right upper lobe and there were multiple calcified lymph nodes in both hilum and mediastinal area. We performed diagnostic bronchoscopy, but no definite endobronchial mass was found. Next we did CT guided percutaneous fine needle aspiration biopsy. On microscopy, sulfur granules consisting of multiple granular basophilic centers with hyaline projection of branching filaments were noted. From this finding we made a diagnosis of pulmonary actinomycosis. (Tuberc Respir Dis 2004; 57:1-4)

[1]  Ming-Shian Lu,et al.  The role of surgery in hemoptysis caused by thoracic actinomycosis; a forgotten disease. , 2003, European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery.

[2]  Y. Sohara,et al.  Surgical considerations for pulmonary actinomycosis. , 2002, The Annals of thoracic surgery.

[3]  C. López-Menéndez,et al.  Pulmonary actinomycosis with thoracic soft tissue mass: a rare onset form. , 2001, European journal of radiology.

[4]  E. Fishman,et al.  Pulmonary and hepatic actinomycosis: atypical radiologic findings of an uncommon infection. , 2000, Clinical imaging.

[5]  S. D. Lee,et al.  Clinical Study on Thoracic Actinomycosis , 1998 .

[6]  A. Tastepe,et al.  Thoracic actinomycosis. , 1998, European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery.

[7]  P. Baas,et al.  Actinomycosis, a sheep in wolves' clothes. , 1996, Lung cancer.

[8]  Dongho Kim,et al.  Primary Endobronchial Actinomycosis , 1996 .

[9]  H. Jo,et al.  A case of primary hepatic actinomycosis. , 1993, Journal of Korean medical science.

[10]  S. Kwon,et al.  A Case of Pulmonary Actinomycosis , 1992 .

[11]  G. Casola,et al.  Misdiagnosis or missed diagnosis? Thoracic actinomycosis and carcinoma on sequential CT-guided lung biopsies. , 1990, AJR. American journal of roentgenology.

[12]  D. Wilson,et al.  An unusual cause of thoracic mass. , 1990, Archives of disease in childhood.

[13]  John F. Murray,et al.  Textbook of Respiratory Medicine , 1988 .