Orbital rhabdomyosarcoma in an infant.

A i-year-old male Hindu infant was brought to the Eye Out-patient department of Irwin Hospital, New Delhi, on December 14, I968, with a history of a swelling in the left orbit and protrusion of the eyeball for one month. According to his mother the swelling had first appeared in the lower nasal quadrant of the left orbit and rapidly progressed to the upper nasal quadrant and displaced the eyeball. No history of trauma or any intercurrent infection was available. FExamination There was an eccentric proptosis of the left eye which was displaced forwards, upwards, and outwards (Fig. i). A soft ill-defined swelling measuring 2 X I *5 cm. was palpable on the inner aspect of the eyeball along the medial margin of the orbit. The overlying skin was free but the swelling was attached to deeper structures. The movements of the eye were markedly restricted. Cornea, anterior chamber, iris, and pupillary reactions were normal.