Fibrosing mediastinitis mimicking postpartum heart failure.

Fibrosing mediastinitis, also known as sclerosing mediastinitis and mediastinal fibrosis, is an uncommon disease characterized by the proliferation of a dense fibrous tissue in the mediastinum. This article describes a patient who presented to the ED with atypical signs and symptoms that initially seemed like heart failure but were eventually diagnosed as fibrosing mediastinitis.