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HRCT in miliary lung disease
A E Voloudaki1, I N Tritou, E G Magkanas
1Department of Radiology, Medical School, University of Crete, Heraklion, Greece.
Acta Radiologica (Stockholm, Sweden : 1987)
|July 8, 1999
Summary
High-resolution CT (HRCT) can help differentiate diseases with a miliary pattern. Peripheral nodules and thickened fissures suggest sarcoidosis, while cyst-like lesions may indicate tuberculosis or metastatic cancer.
Area of Science:
- Radiology
- Pulmonology
- Pathology
Background:
- Miliary pattern on imaging indicates diffuse, small nodular lung disease.
- Differential diagnosis of miliary pattern is crucial for appropriate patient management.
Purpose of the Study:
- To analyze high-resolution CT (HRCT) features of a miliary pattern in different diseases.
- To identify HRCT findings that aid in differentiating causes of miliary lung disease.
Main Methods:
- Retrospective review of eight HRCT studies exhibiting a miliary lung pattern.
- Inclusion of cases diagnosed with tuberculosis, Candida albicans, sarcoidosis, and metastatic adenocarcinoma.
Main Results:
- HRCT revealed diffuse nodules up to 3 mm in all cases.
- Peripheral nodule distribution, thickened interlobular septa, and interlobar fissures were noted in sarcoidosis.
- Cyst-like lesions were observed in tuberculosis and metastatic adenocarcinoma.
Conclusions:
- Peripheral nodules, thickened septa, and fissures suggest sarcoidosis.
- Multiple cyst-like lesions may indicate tuberculous or metastatic origin.
- Cephalocaudal distribution, margin, and size of nodules are not reliable for differential diagnosis.