Arachnoid cysts are cerebrospinal fluid-filled sacs that are located between the brain or spinal cord and the arachnoid membrane, one of the three membranes that cover the brain and spinal cord. They are usually located within subarachnoid space with a membrane consisting of arachnoid cells and collagen fibers and are filled with CSF. It is naturally considered as a congenital cyst because of its common appearance in the infancy. Typical symptoms of an arachnoid cyst around the brain include headache, nausea and vomiting, seizures, hearing and visual disturbances, vertigo, and difficulties with balance and walking. MRI and CT can help in diagnosis. Arachnoid cysts are benign and the vast majority remains asymptomatic throughout life. If they are deemed to be causing symptoms then surgery can be contemplated. Here, we are aimed at describing a case of Arachnoid cysts involved cerebellopontine angle that has been reffered to audiology clinic in Tehran University of Medical Sciences. The experiments and results of radiographic techniques has been brought here.

Cochlear implant is the result of a great combination and collaboration of engineering and medicine. It is mainly because it has the most conflict with the human nervous system among all prosthesis. Cochlear implant helps a child with profound hearing loss to understand and articulate speech and let an adult person with hearing loss communicate with people by phone. Although these wonderful results could not be seen in all patients, will let us know about the great scientific findings.

Background and Aim: Lack of early detection of and intervention for infants hearing loss results in a significant delay in speech and language development. So auditory rehabilitation plays an important role in improving the diminished communication ability. One of the most successful auditory training approaches is the SKI-HI parent-infant program. The purpose of this study was preparation and evaluation of Farsi-Language SKI-HI program for under 3-year-old hearing impaired  children.
Materials and Methods: After translation and modification of the text of the program, fifteen under 3-year-old children with bilateral severe sensory hearing loss who were fitted with appropriate behind the ear hearing aids received intervention for 6 months. The levels of the auditory skills were measured pre and post intervention. Intervention Efficiency Index (IEI), Pretest Developmental Rate (PDR) and Proportional Change Index (PCI) were computed.
Results: The data indicated that there was a significant difference between means of IEI and PDR which were 0.87 and 0.31, respectively. PCI was 3.38 indicated that the children&aposs auditory skills developed at about 2.38 times higher rate after SKI-HI intervention than they did before.  PCI confidence interval showed that development in  the population is 1.46 to 3.30 times higher after SKI-HI intervention (with 95% probability) the rate of auditory skills.
Conclusion: The auditory training with Farsi-language SKI-HI Parent-Infant program may efficiently affect development of auditory skills of hearing impaired children.