Alveolar Microlithiasis

Alveolar microlithiasis is a very rare disease. On CT (Figure 135) diffuse micronodular calcifications with a sand-like appearance can be seen in the basal-dorsal regions. Typically, the condition exhibits a poor correlation between radiographic findings and symptoms, often the patient appears worse on CT than clinically.

Figure 135. Man in his fifties with known alveolar microlithiasis. CT shows a “sandstorm”-like picture with extensive small calcifications.

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