title: Pulsatile visual phenomenon, ipsilateral to a metastatic orbital carcinoid, occurring during usage of sildenafil (Viagra).
authors.forename: J M
authors.initials: JM
authors.lastname: Smith
authors.forename: G E
authors.initials: GE
authors.lastname: Rose
authors.forename: P N
authors.initials: PN
authors.lastname: Plowman
mesh_terms: D002276:Carcinoid Tumor / Q000556:secondary*; D003110:Colonic Neoplasms / Q000150:complications; D006801:Humans; D008297:Male; D008875:Middle Aged; D009918:Orbital Neoplasms / Q000556:secondary*; D010726:Phosphodiesterase Inhibitors / Q000009:adverse effects*; D010879:Piperazines / Q000009:adverse effects*; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones; D014057:Tomography, X-Ray Computed; D014786:Vision Disorders / Q000139:chemically induced*
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate