Unilateral Temporal Conjunctival Chemosis as a Manifestation of Superior Vena Cava Syndrome due to Pulmonary Adenocarcinoma

ABSTRACT A 71‐year‐old man presented with unilateral, temporally predominant conjunctival chemosis unresponsive to antiallergic therapy. Imaging and cytological analyses revealed pulmonary adenocarcinoma causing superior vena cava (SVC) obstruction. Resolution of chemosis after radiotherapy suggests that such distinctive ocular findings may serve as an early clinical clue to underlying SVC syndrome.