Figure 2: Serial sections of chest HRCT scan shows (a) Branched tubular opacity with adjacent translucency (star) right upper lobe (b) The branched opacity culminates in a club-like lesion (mucocele) projecting from the hilum (c) Coronal image clearly delineates the origin and branched nature of the lesion (d) Soft-tissue window shows punctate calcification within the lesion