Myxedema coma complicated by bilateral hygromas.

Myxedema coma is a difficult diagnosis to make due to a lack of diagnostic criteria. Cardinal features include hypothermia, bradycardia, gastrointestinal symptoms, pericardial/pleural effusions and affection of CNS. Anemia and hyponatremia are common. In case of suspected myxedema coma, neuroimaging should be a part of the evaluation in most cases. There is a possible association between longstanding/severe hypothyroidism and hygroma.