The anaesthetic management of children with anterior mediastinal masses.

Children with anterior mediastinal masses may experience serious complications during general anaesthesia. We retrospectively surveyed the records of children with an anterior mediastinal mass who had been admitted to our hospital over a 7 year period. The presence of pre-operative symptoms or signs, findings of any special investigations performed and the anaesthetic outcome were noted. All radiological investigations were studied and tracheal compression measured. The majority of patients presented with severe clinical signs. There was a poor relationship between clinical signs and size of tumour or tracheal compression on CT scan. Corticosteroids were used prior to diagnosis in 33% of patients, all of whom were considered high risk. A clear diagnosis was made in 95% of these patients. The overall complication rate was 20% and 5% of patients had a serious complication related to anaesthesia. Stridor was the only sign that predicted an anaesthetic complication. Peri-operative respiratory complications were confined to patients with an isolated tracheal cross-sectional area less than 30% normal or less than 70% and associated with bronchial compression.