J Korean Radiol Soc.  1998 Jul;39(1):73-80.

Radiologic Findings of Pulmonary Sarcoidosis: Comparison Between Radiograph and HRCT

• Kim Y
• Lee KS
• Yoo JH
• Suh JS
• Rhee C
• Chung EC
• Kim SJ

Abstract

PURPOSE: To analyse the radiographic and HRCT findings of pulmonary sarcoidosis and to evaluate thediagnostic usefulness of HRCT
MATERIALS AND METHODS
Initial chest radiographs (n=14) and HRCT scans (n=14), anda followup HRCT scan (n=1) from 14 patients (5 men and 9 women;median age, 38 Years) with biopsy proven pulmonarysarcoidosis were analyzed. RESULT: On initial chest radiographs, they showed pulmonary lesions were seenpredominantly in the middle, upper and lower lung zones in four, two and one patient, respectively. Patterns oflesions were reticulonodular opacities (n=4), air-space (n=2), honeycombing(n=1), macronodule(n=1), and cavitarynodule (n=1). In all patients, HRCT scans demonstrated both pulmonary lesions and intrathoracic lymphadenopathy.Pulmonary lesions were seen predominantly in the middle, lower and upper lung zones in nine, three and twopatients, and in the posterior and anterior lung zones in eight and four patients repectively. Lesions werepredominantly micronodules, with perilymphatic distribution (n=12), macronodules with air-bronchogram (n=1),cavitary macronodules (n=1), ground-glass opacity (n=5), consolidation (n=2), and irregular lines (n=8).
CONCLUSION
Reticulonodular lesions in the middle lung zone were seen on radiograph, while the most common HRCTfinding was micronodular lesions with perilymhpatic distribution. HRCT is much more sensitive than chestradiograph for the detection of both pulmonary lesions and lymphadenopathy; this modality revealed micronoduleswhich were invisible on chest radiographs.

Keyword

Lung, CT; Sarcoidosis

MeSH Terms

Biopsy
Follow-Up Studies
Humans
Lung
Lymphatic Diseases
Male
Radiography, Thoracic
Sarcoidosis
Sarcoidosis, Pulmonary*