PMC7369451_01
CT scan revealed biconvex heterogenous hypodensity extra-axial collection about 3.4 x 8.2 x 4 cm with thickened rim calcification along right frontoparietal convexity and right coronal suture in transverse (A) and coronal (B) view.
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And also mild swelling of right cerebral hemisphere with compression to ipsilareral lateral ventricle and midline structure shifting to the left about 5 mm were noted (Fig. 1).
The appearance looked like double yellowish thick walls of an egg shell stuffed (A and B) with soft clay-liked content (C).
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The outer and inner membranes could be easily peeled off from dura mater and underlying brain surface without cortical injury (Fig. 2).
Pathologic examination (A, x100) and (B, x40) showed red blood cells accumulated as hematoma which was encapsulated by dense fibrocollagenous tissue within the sac-liked structure. The fibrous wall also revealed scattered dystrophic calcifications and some hemosiderin-laden macrophage infiltration.
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Neither atypical cells nor malignant cells were seen (Fig. 3).
A follow-up CT scan showed hypodensity lesion at right fronto-parietal area without midline shift suggesting cerebral infarction possibly due to brain compression from the calcified chronic subdural hematoma.
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A follow-up CT scan showed hypodensity lesion at right fronto-parietal area without midline shift suggesting cerebral infarction possibly due to brain compression from the calcified chronic subdural hematoma (Fig. 4).