Ocular manifestations and long-term complications of rhabdomyosarcoma in children.

Background/objectives: The purpose of the study was to describe the ocular manifestations of rhabdomyosarcoma in a large cohort of children.

Subject/methods: This was a retrospective observational cohort study. The medical records of all pediatric patients with head and neck rhabdomyosarcoma diagnosed between 1997 and 2021 at a tertiary-care pediatric hospital were analyzed. The main outcome measures were the incidence and prognostic role of ocular findings at presentation and long-term ocular complications.

Results: There were 77 children with head and neck rhabdomyosarcoma in the study cohort with 38 patients showing ocular manifestations at presentation. Median age at diagnosis was 6.0 years, the median follow-up was 5.7 years and 54.5% were male. At last follow-up, 70.1% had no evidence of progression, 26.0% were deceased, and 2.6% were on palliative treatment. Orbital signs were common (44.2%). The most common ocular findings were proptosis (18.2%), restriction of extraocular motility (28.6%), strabismus/diplopia (22.1%) and ptosis (16.9%). The most common long-term complications were bony hypoplasia/facial asymmetry (40.3%) and keratopathy/dry eye (31.2%). Poor visual acuity (≤20/200) was noted in 13 (16.9%) patients with 5 (6.5%) patients requiring an exenteration. Survival was 100% in primary orbital RMS (p = 0.02), whereas any or a combination of cranial nerve palsies carried a poor prognosis (42% survival, p = 0.008).

Conclusions: In our cohort, half of children with rhabdomyosarcoma had ocular manifestations at presentation with about one-third showing orbital tumor involvement. Cranial nerve involvement carried a significantly worse prognosis for survival.