Shaikh, J., Baig, S., Soomro, N.H. and Rao, N.A. 2018. Bilateral Hydropneumothorax in a patient with Metastatic Gastric Adenocarcinoma of Signet Ring Morphology- An Unusual Presentation. Pakistan Journal of Chest Medicine. 24, 2 (Aug. 2018), 114–119.