Branching opacities and small foci of consolidation are seen in the majority of cases.

Of these, 3 showed one or more small foci of intense FDG uptake in the periphery.

One pattern was a mild lesion consisting of scattered small foci of intraalveolar cryptococcal proliferation with a histiocytic response.

Thoracic spine MR imaging revealed multiple T1 low signal small foci in part of the vertebral body suggesting bone metastasis of the tumor.

In 8 of these 14, thyroidectomy revealed small foci of medullary thyroid carcinoma; the remaining 6 have not yet been operated on.

Small foci of necrosis were seen associated with mild interstitial mononuclear cell infiltration.