Impact of image quality, radiologists, lung segments, and Gunnar eyewear on detectability of lung nodules in chest CT.

Background: Despite the increasingly higher spatial and contrast resolution of CT, nodular lesions are prone to be missed on chest CT. Tinted lenses increase visual acuity and contrast sensitivity by filtering short wavelength light of solar and artificial origin.

Purpose: To test the impact of Gunnar eyewear, image quality (standard versus low dose CT) and nodule location on detectability of lung nodules in CT and to compare their individual influence.

Extranodal NK/T-cell lymphoma, nasal type.

We report a case of extranodal NK/T-cell lymphoma, nasal type, which is rare in the United States and Europe. It is more prevalent in Asians and Native Americans of Mexico, Central America, and South America. A 30-year-old Southeast Asian man with facial swelling, fever, and unintentional weight loss was found to have leukopenia and thrombocytopenia.