PMC5629887_01
Preoperative radiograph showing subtrochanteric fracture of right femur. Note absence of any obvious clue suggestive of primary bone pathology
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F1
An X-ray right hip and pelvis were performed which revealed a subtrochanteric fracture of the right femur with displaced fracture fragments [Figure 1].
Postoperative films showing in situ intramedullary nail. There was lysis around the implant, resorption of the fracture ends, and no evidence of callus formation
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F2
Fresh radiographs revealed lysis around the implant with resorption of the fracture ends [Figure 2].
Part of specimen showing pearly white cyst wal
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F3
Microscopy revealed fragments of thick eosinophilic acellular lamellated membrane corresponding to parasite exocyst [Figure 3].
(a) Thick eosinophilic lamellated membrane/parasite exocyst (H and E, x200). (b) Dagger-shaped refractile hooklets (arrow) of Echinococcus and tiny fragments of germinal layer (H and E, x400)
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F4
High magnification showed characteristic refractile dagger-shaped hooklets [Figure 4].