High-resolution CT of alveolar filling disorders

초록

Alveolar filling process refers to the disease that mainly affects the terminal airspaces. Airspace filling processes are characterized on CT by the presence of one or more fairly homogeneous segmental, subsegmental, or lobular areas of consolidation with little or no volume loss. Acinar nodules and poorly defined centrilobular nodules are associated frequently. Many diseases can present with alveolar filling disorders. It may be impossible to make a definite diagnosis for the disorders with high-resolution CT (HRCT) findings alone. Integration of HRCT findings with time factors including both evolution and resolution of the disease, and clinical and laboratory findings, however, may provide helpful clues to reach a reasonable diagnosis. HRCT also plays a useful role in determining the extent of a primary disease and in identifying accompanying abnormalities and complications of the disease.

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