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A 2-year-old, female, neutered dog presented with a right-sided, non-painful, ventral neck mass approximately 2.5 cm in diameter. Although aspirates of the mass yielded a low volume of grossly purulent exudate, there was no response to antibiotic and nonsteroidal anti-inflammatory medications. Cervical ultrasound examination revealed a straight hyperechoic structure with no associated distal acoustic shadowing in the right mandibular salivary gland, surrounded by a small volume of anechoic fluid, most consistent with migrating foreign material and focal sialadenitis. The surrounding subcutaneous tissues were hyperechoic with interspersed anechoic fluid material, consistent with cellulitis. Vegetative material was considered most likely due to the shape of the structure and absence of distal acoustic shadowing. Right mandibular and sublingual sialadenectomy was performed and vegetative material was retrieved from the mandibular salivary gland. Histopathology revealed chronic pyogranulomatous sialadenitis secondary to foreign body migration. Surgical excision achieved clinical resolution at 8 weeks follow-up. [ABSTRACT FROM AUTHOR]

An experiment is designed where students will be using both gold and silver nanoparticles to study the enhancement factors of organic molecules adsorbed to the surface of the nanoparticles during or after synthesis by using surface-enhanced Raman spectroscopy (SERS). The experiment has helped students learn about the theory and experimental information obtained by studying Raman and SERS and also to make intuitive conclusions in relationship to their data.

A letter to the editor is presented in response to the article "Full-thickness skin grafts in dogs and cats versus humans" that was published in a previous issue along with response from the author.