Misleading Rare Case of Idiopathic Hypertrophic Pachymeningitis

Figure 1

Nonenhanced axial CT scan demonstrates large right temporoparietal fluid collection (a). Nonenhanced axial postop CT scan demonstrates failure of surgical drainage due to the presence of dural layer in deep portion of the collection (b). Follow-up nonenhanced axial CT scan showed interval hemorrhage (blue arrow) in the collection (c).

(a)

(b)

(c)