Uniocular ptosis due to cysticercosis of extraocular muscle.

Involvement of extraocular muscle by Cysticercus cellulosae is very rare. Rarer still is the isolated involvement of the levator palpebrae superioris muscle presenting clinically as ptosis. We report here such a presentation in an eleven years old girl.

Damage to the anterior visual pathway and brain parenchyma following external pituitary irradiation.

Three cases of damage to the optic nerves and chiasma following pituitary irradiation with Co60 teletherapy are described. All of them presented with progressive visual impairment months following irradiation and simulated recurrence of the tumour. CT scan was also not helpful in differentiating radionecrosis from tumour recurrence. On exploration the optic nerves and chiasma appeared discoloured and scarred. One case, who also had diffuse radionecrosis of brain parenchyma, died. No satisfactory therapy is currently available for this grave complication but proper safeguards can prevent it.