Most patients with previous incomplete colonoscopy can undergo a successful repeat colonoscopy at a tertiary care centre with instruments that are readily available to most gastroenterologists. Other modalities for evaluation of the colon should be deferred until a second attempt is made at an expert centre.
Meticulously performed endoscopic frontal sinusotomy with computer guidance appears to be an effective minimally invasive procedure to treat chronic frontal sinusitis secondary to outflow tract obstruction. Properly performed, it is effective in dealing with the most diseased frontal sinus. It offers clear advantages in reducing complications and recurrence rates in frontal sinus disease even in revision cases.
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