RT Journal Article SR Electronic T1 Spontaneous pneumothorax as a clinical manifestation of neurofibromatosis type 1 JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e238694 DO 10.1136/bcr-2020-238694 VO 14 IS 3 A1 Lorentzen, Tine A1 Madsen, Hanne A1 Lausten-Thomsen, Marie Josée Zareh A1 Bygum, Anette YR 2021 UL http://casereports.bmj.com/content/14/3/e238694.abstract AB Neurofibromatosis type 1 (NF1) is a genetic disorder affecting the skin, nervous system, eyes and bones. Pulmonary involvement is unknown to many physicians. Yet, patients may be affected by lung bullae and cysts, which represent an increased risk for secondary spontaneous pneumothorax (SSP). We present a 56-year-old patient with a pathogenic variant of the NF1 gene, who suffered from NF1 with lung manifestations and recurrent SSP. It is essential to identify the patients having an increased risk of developing SSP as preventive surgery seem to decrease the risk of new events. Pneumothorax can be a clinical manifestation of NF1 but is not yet widely acknowledged as such.