Activity measurements and calibrations for Ac in radioactive equilibrium with its progeny.

The massic activity of Ac in 0.1 mol/L HCl was measured by multiple primary methods over four consistent measurement campaigns. Results from the triple-to-double coincidence ratio (TDCR) method of liquid scintillation (LS) counting were in accord with other LS-based primary methods.

Therapeutic Misadventure in a Case of Isolated Mastoid Cholesteatoma.

Cholesteatoma is a mass of keratin debris in the middle ear cavity or mastoid. Congenital cholesteatomas may remain asymptomatic for many years and present during adulthood or may even be an incidental finding. We hereby describe a case of 41-year male with an isolated mastoid congenital cholesteatoma with sigmoid plate erosion and posterior cranial dura exposure extending into digastric muscle.

Variability in Postoperative Nipple Sensation by Dermoglandular Pedicle in Bilateral Breast Reduction.

Background: Decreased nipple sensation following reduction mammoplasty can negatively affect a variety of patient-centered outcomes. This observational study examined the impact of dermoglandular pedicle type on subjective postoperative nipple sensation.

Methods: A total of 178 women who underwent a bilateral reduction mammoplasty at a single institution from 2017 to 2023 and completed an 11-item survey assessing subjective postoperative nipple sensitivity across various tactile modalities were included.