Discussion
Diagnosis With Brief Discussion
- Diagnosis
- Cryptococcal infection in immunocompetent patient
- Radiologic Findings
- Chest radiographs showed multiple cavitating nodules and consolidations in the posterior aspect of both central lung fields. Chest CT showed ill-defined cavitating nodules with surrounding ground glass opacities. The lesion was moderately enhanced. No lymphadenopathy or pleural effusion noted. Pathologic diagnosis, obtained by wedge resection was granulomatous inflammation with abscess formation. PAS and silver staining revealed cryptococcus (small and black, ring-shaped organisms).
- Brief Review
- Pulmonary infection with C. neoformans can be aymptomatic and subclinical, mild and self-limited or severe and progressive. The noncompromed hosts tended to have a radiographic pattern of a peripheral nodue or nodules. Segmental pneumonias, miliary nodules, cavitation, lymphadenopathy, and pleural effusions are less common in immunocompetent patients. The recent report regarding to HR CT manifestations described multiple nodules including surrounding centrilobular nodules without “tree-in-bud” appearance. Diagnosis was confirmed by cytologic observation and culture of the organism. A case of multiple cavities on chest film had a high titer serum cryptococcal antigen. Biopsy showed expansion of the alveolar spaces by foamy macrophages, numerous cryptococcal yeast forms, and proteinaceous eosinophilic fluid collection, and a minimal interstitial nomonuclear inflammatory response devoid of granulomas.
- References
- 1. Murayama S et al. Pulmonary cryptococcosis in immunocompetent patients HRCT characteristics. Clinical Imaging 2004;28:191-195
2. Zinck SZ et al. Pulmonary cryptococcosis: CT and Pathologic findings. JCAT 2002;26(3):330-334
3. Nunez M et al. Pulmonary cryptococcosis in the immunocompetent host. Chest 2000;228(2):527-534
4. Khoury MB et al. Thoracic cryptococcosis. AJR 1984;141:883-896
5. Maeda J et al. A case of multiple cavities on chest film with high titer serum cryptococcal antigen. Nihon Kyobu Shikkan Gakkai Zasshi. 1989;27(11):1330-1334
- Keywords
- Lung, Infection, Fungal infection,