Hi, I am searching answers on behalf of my father, who recently was admitted to hospital due to chest pain and heaviness , he had huge plueral effusion, later On CT scans relaveld some benign nodules and a follow up PET scan showed massive plueral effusion, hypermetabolic lesion 3.4*3.5 cm and diffused plueral thickening. effusion was also hypermetaboilc, however all his bronchioscopic , effusion tests etc have came negative of any malignancy.