Magnetic Resonance Imaging of Pectoralis Major Injuries in an Active Duty Military Cohort: Mechanism Affects Tear Location.

Background: Pectoralis major (PM) tendon tears are common injuries in athletic patient populations, where operative repair is largely recommended for maximum functional recovery. The repair varies in difficulty and technique based on the location of the tear within the muscle-tendon unit. Magnetic resonance imagining (MRI) has been reported to be sensitive and specific for identifying the tear location, but the effect of injury mechanism on tear pattern has not been previously investigated.

Breast papillomas in the era of percutaneous needle biopsy.

Background: The significance of breast papillomas detected on core needle biopsy (CNB) remains unclear. While those associated with malignancy or atypia are excised, no clear solution exists for benign papillomas. We sought to determine the indication for surgical excision, incidence of malignancy, significance, and natural history.

Analgesic tolerance and cross-tolerance to i.c.v. endomorphin-1, endomorphin-2, and morphine in mice.

The present study examined the development of analgesic tolerance to endomorphin-1 (EM1), endomorphin-2 (EM2), and morphine, and cross-tolerance among these drugs. Male Swiss Webster mice were injected i.c.