The resulting hydrocele presents as painless enlargement of the scrotum, similar to what may be encountered with testicular neoplasms.
A convenient method to differentiate the conditions is to transilluminate the scrotum, as the hydrocele will appear a soft red while a solid tumor will not transmit light.
[1] Hydranencephaly is a condition in which the brain's cerebral hemispheres are absent to a great degree and the remaining cranial cavity is filled with cerebrospinal fluid.
The device used in this operation is a Chun gun that uses a 150 watt projection bulb as a light source.
There is brilliant transillumination in case of meningocele due to presence of CSF inside the cyst.