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From the Archives of the Archives
June 1999

A look at the past. . .

Arch Ophthalmol. 1999;117(6):801. doi:10.1001/archopht.117.6.801

Echinococcus Cysts.

Up to the present time thirty-eight cases of echinococcus cysts in the orbit are known. Weeks collected thirty-three and to this number Rabinovitch has added five more. They are observed either as simple cysts up to the size of a pigeon's egg, or there may be from three to ten vesicles from the size of a lentil to that of a nut. As a rule the parasites are enclosed in a connective-tissue capsule. . . . As previously mentioned, echinococcus cysts contain a clear fluid of neutral or alkaline reaction and a specific gravity of 1008 to 1013. Scolices, hooklets, or portions of the characteristic membrane may be demonstrated microscopically. Treatment consists either in puncture with drainage or in radical operation.