Chest
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Louis Hamman described distinctive chest noises and emphasized their association with pneumomediastinum in 1937. However, the etiology of Hamman's sign remains incompletely defined and its association with pneumothorax underemphasized. We present a patient with pneumothorax and Hamman's sign assessed by computed chest tomography. Tomography suggested an alternate genesis of Hamman's sign; free pleural air may be cyclically channeled through a lung fissure thus creating chest sounds.
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Two patients are described with severe MVS, pulmonary venous hypertension and enlarged mediastinal, pulmonary and hilar lymph nodes. These enlargements were diagnosed on a preoperative chest CT. After MV replacement these enlarged lymph nodes nearly all resolved. The lymphadenopathy should be considered to be secondary to MVS with pulmonary venous hypertension.