Unveiling the enigma of spontaneous cervical swelling syndrome: A case report.

Spontaneous cervical swelling syndrome is an uncommon clinical syndrome characterized by the sudden onset of swelling in the cervical region with no identifiable cause. A 47-year-old woman with a history of Iron Deficiency Anemia presented to the emergency department (ED) complaining of an acute left neck and upper chest swelling and pressure sensation in her neck. The swelling started suddenly and was growing rapidly over several hours.