Discussion
Diagnosis With Brief Discussion
- Diagnosis
- Aspergilloma
- Radiologic Findings
- Figure 1. Chest PA shows a small nodular opacity in the RUL above the right hilum.
Figures 2-5. Contrast-enhanced chest CT images show a 2cm well-defined nodule with mild peripheral enhancement in the right upper lobe. This nodule is connected to adjacent tubular low attenuating lesions.
Figure 6. This RUL nodule does not show any interval change when compared with the initial chest CT image performed 6 weeks before.
To exclude the possibility of malignancy, percutaneous lung biopsy was performed. The pathologic diagnosis of percutaneous needle biopsy revealed fungal hyphae, morphologically consistent with aspergillus species. As our patient had history of repeated hemoptysis, this patient underwent RUL posterior segmentectomy for treatment. Pathology revealed fungus ball in bronchial lumen, which was consistent with aspergilloma.
- Brief Review
- The nodular appearance of pulmonary aspergillosis without an air-meniscus sign has not only been reported in immunocompetent patients without underlying lung disease, but also in mildly immunosuppressed patients with underlying chronic lung diseases. It is suggested that primary aspergilloma may arise from implantation of fungus in a normal bronchus followed by gradual dilatation of bronchus by the pressure of its growing colony. The saprophytic aspergillosis in immunocompetent patients accompanied by an air-meniscus sign enables it to be distinguished from malignancy. Pulmonary aspergillosis without air-meniscus sign is seen as a non-specific solid nodule or mass on CT scans. Not only a specific diagnosis of pulmonary aspergillosis is difficult, but also differentiation from malignancy ware radiologically impossible. Therefore the pathologic evaluation by obtaining specimen using percutaneous lung biopsy is essential for the differentiation between this unique pulmonary aspergillosis and lung cancer.
- References
- Yoon SH, Park CM, Goo JM, et al. Pulmonary aspergillosis in immunocompetent patients without air-meniscus sign and underlying lung disease: CT findings and histopathologic features. Acta Radiologica 2011; 52: 756–761.
Kang EY, Kim DH, Woo OH, et al. Pulmonary aspergillosis in immunocompetent hosts without underlying lesions of the lung: radiologic and pathologic findings. AJR 2002;178:1395–1399.
- Keywords
- Airway, Infection, Fungal infection,