Mediastinal masses found in the context of CT screening for lung cancer in asymptomatic people should be approached in a "conservative" manner; this includes thymic masses smaller than 3 cm in diameter, as most of these remain unchanged or even decrease in size.

Using data from the Current Population Survey March Supplement 1999, this study examines why married men earn more than men who have never married. We find that the marriage wage premium cannot be attributed to the unobservable higher earnings capability of married men. Instead, wage gains from marriage are explained by the degree of specialization within the household. Our findings cast doubt on the argument that the selection of high-ability men into marriage is the cause of the marriage wage premium. (JEL J12, J31)

Actinomycosis should be included in the differential diagnosis when CT scans show bowel wall thickening and regional pelvic or peritoneal mass with extensive infiltration, especially in patients with abdominal pain, fever, leukocytosis, or long-term use of intrauterine contraceptive devices.

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