Spontaneous pneumothorax is most common in adolescents and young adults. Some of them develop contralateral pneumothorax. In this paper, we report the case of a patient with spontaneous contralateral pneumothorax, whose body mass index (BMI) was 18.8 kg/m2. For either chest physicians or thoracic surgeons, follow up with recognition of increased risk of the contralateral pneumothorax is important especially in patients with contralateral bullous lesions and low BMI.
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 Gamondes JP, Wiesendanger T, Bouvier H, et al. Recurrent spontaneous pneumothorax in young subjects: treatment by one-stage bilateral apical pleurectomy through the axillary route. Presse Med 1987; 16: 423–426
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