Surfer's Chest Knots

Abstract
To the Editor.—A variation of the usual surfer's nodule, previously reported, has been encountered and related to the use of shorter boards.A 47-year-old Hawaiian man was admitted for investigation of recently discovered polycythemia. Aside from a reddish hue to his dark brown pigmentation, there were no unusual findings, except for a round, soft, nontender, 5-cm subcutaneous mass over the anterolateral aspect of the lower part of the left hemithorax, with a less prominent nodule on the right. A small firm nodule was present on the dorsum of the left foot.This right-handed patient explained that these chest nodules were caused by lying on a surfboard. He surfed from 5 AM until noon on weekends. The nodules developed when he switched to the shorter seven-foot board, while the nodules of the feet diminished, since his feet were in contact less with the board.Surfer's nodules (201:134, 1967) or "knots"

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