A delayed, endoscopy first approach appears to be a reasonable strategy as it is associated with decreased LOS and low complication rate.

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Endoscopic drainage was associated with a shorter post-procedure length of hospital stay and a greater rate of normalization of SIRS parameters than percutaneous drainage, although only the effects on heart rate and respiratory rate reached statistical significance. Further studies are needed to establish which primary drainage modality is superior for pancreatic necrotic collections.

SUMMARY Pulmonary arteriovenous malformations are rare pulmonary vascular lesions which are associated with Osler Weber Rendu syndrome (hereditary haemorrhagic telangectasia). They act as right‐to‐left shunts and have cardiovascular and embolic complications. We present a patient with an apparent anterior mediastinal mass secondary to a pulmonary arteriovenous malformations which was successfully treated percutaneously.