Hamman syndrome. A case report by Osvaldo Barrios Viera, Marleny González Machín

“…Hamman's syndrome is characterized by the presence of free air in the interstitial space of the mediastinum, associated with subcutaneous emphysema. …”
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Postpartum Pneumomediastinum and Subcutaneous Emphysema: Two Case Reports by Shivanthi Kandiah, Harish Iswariah, Stephen Elgey

“…Spontaneous pneumomediastinum associated with subcutaneous emphysema is a rare condition also known as Hamman's syndrome. It can also be seen postpartum. We present two cases of subcutaneous emphysema associated with childbirth in nulliparous women, both of which resolved spontaneously.…”
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