The sheath was found empty of the penis, which had been driven into the perineum.
Raven mentions a case of spontaneous retraction of the penis in a man of twenty-seven.

While in bed he felt a sensation of coldness in the penis, and on examination he found the organ (a normal-sized one) rapidly retracting or shrinking.

He hastily summoned a physician, who found that the penis had, in fact, almost disappeared, the glans being just perceptible under the pubic arch, and the skin alone visible.

The next day the normal condition was restored, but the patient was weak and nervous for several days after his fright.

In a similar case, mentioned by Ivanhoff, the penis of a peasant of twenty-three, a married man, bodily disappeared, and was only captured by repeated effort.