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VCS: Physical findings include dilated neck veins, a prominent venous pattern on the chest, facial edema, and a plethoric appearance (picture 4). The chest radiograph typically shows widening of the mediastinum or a right hilar mass. CT can often identify the cause, level of obstruction, and extent of collateral venous drainage
Pancoast: manifested by pain (usually in the shoulder, and less commonly in the forearm, scapula, and fingers), Horner's syndrome, bony destruction, and atrophy of hand muscles.