Anaphylactoid reaction to hydroxycobalamin with tolerance of cyanocobalamin.

syndrome in extensive haemangioma of the tongue and lip in a newborn infant.4 Thirdly, the substernal goitres reported in the literature have not been uniformly defined in relation to the proportion of the thyroid gland within the thorax. Therefore, it is rather difficult to compare the sizes and the results of reported series of substernal goitres. For the last decade, we and others' have chosen to refer to any goitre in which more than 50% of its mass is inferior to the thoracic inlet as substernal.