Dermoid cysts are common orbital developmental tumors in childhood. They account for 3 to 9% of primary tumors. considered be congenital, but not all them diagnosed at birth. benign choristomas that arise from sequestration ectoderm along the lines embryonic fusion mesodermal processes destined bone. In most cases, lesion is close zygomatic-frontal suture leading a superotemporal subcutaneous m...

A 65-year old, farm worker female with a six weeks right eye (RE) discomfort, tearing and progressive eyelid swelling was referred to our clinic. Past ophthalmic and systemic history was uneventful. She presented painless, considerable RE superior eyelid edema, bilateral best-corrected visual acuity of 0.9, normal ocular movement and pupil reflex. Slit lamp examination revealed conjunctival hyp...

Isolated enophthalmos is a rarely observed entity in neurofibromatosis (NF). A 12-year-old male presented with right lower eyelid fat prolapse and enophthalmos for the past 7 years. There was no history of antecedent trauma/surgery. Computed tomography of orbit revealed an ill-defined intraconal hyperdense lesion located between lateral and inferior rectus along with an enlarged inferior orbita...

Among the many issues surrounding the involvement of the cerebellum in motor learning, the relative roles of the cerebellar cortex and cerebellar nuclei in Pavlovian conditioning have been particularly difficult to assess. While previous studies have investigated the effects of cerebellar cortex lesions on the acquisition and retention of conditioned movements, we have examined the effects of t...

A 24-year-old black female (HIV-positive) was referred to our clinic with a 4-week history of an ulcerative lesion of the right upper and lower eyelids. She was on treatment for pulmonary tuberculosis and had been admitted to a secondary level hospital. She had no other ocular symptoms or signs. A tissue biopsy of the lesion revealed multinucleate squamous cells with ground glass viral nuclear ...

inverted follicular keratosis (ifk) a benign tumor of skin appendages which is mostly presented as a solitary nodule with keratotic or scaling surface on the face of a middle aged or old patients but it can develop in other parts of the body. different studies have lead to development of different theories about the role of human papillomavirus (hpv) in this kind of skin tumor. the purpose of t...

Young adult heterozygous Lurcher mice constitute an excellent model for studying the role of the cerebellar cortex in motor performance-including the acquisition of new motor abilities-because of the early postnatal degeneration of almost all of their Purkinje and granular cells. Wild-type and Lurcher mice were classically conditioned for eyelid responses using a delay paradigm with or without ...