PMC5006011_01
Left Foot MRI (Magnetic Resonance Image). Axial MRI T1 left foot image (A) shows a subcutaneous ovoid mass of 3cm x 2cm in contact with the first metatarse (white arrow), coronal T1 fat sat with gadolinium (B) and Coronal T2 fat sat (C) show, respectively, an hyposignal T1 and a hyper signal T2 with peripheric enhancement after injection.
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F1
Image) was realized. It showed a subcutaneous ovoid mass of 3cm x 2cm in contact with the first metatarse, associated to hyposignal T1 and hypersignal T2 with peripheric enhancement after injection (Figure 1), suggesting a diagnosis of synovial cyst.
Histological examination of the cyst on Grocott staining.
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F2
Histology revealed a dense fibrous tissue associated with a granulomatous inflammation with abundant giant cells and a necrosis in which were found many irregular septate hyphae (Figure 2).
Macroscopic aspect of Pyrenochaeta romeroi isolate on Sabouraud Chloramphenicol dextrose agar.
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F3
The macroscopic aspect of the culture was velvety and grayish (Figure 3).
Microscopic aspect of P. romeroi isolate (Blue cotton, x40).
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F4
The microscopic aspect revealed septate and branched hyphae (Figure 4).