During standard endoscopic sinus surgery, bone and tissue are removed in order to open the passageways, and this can result in scarring and a recurrence of sinusitis in one-quarter of patients.

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But in order to raise those funds, American Tissue had to bolster its balance sheet.

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Fortunately, I survived with no significant scar tissue and everything still in good working order.

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Conventional CT scans are used to work out the shape of the place where a dose of radiation needs to be concentrated in order to attack a tumour without damaging nearby healthy tissue.

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