Assessment of the Interference of Hyperdiluted Calcium Hydroxyapatite for Neck Rejuvenation in the Ultrasonographic Evaluation of Thyroid.

Abstract

Sagging neck skin is a common complaint, and the use of calcium hydroxyapatite injection is a traditional treatment approach for this region. The published literature is limited concerning the possible interference in imaging exams of hyperdiluted product, which presents radiopaque features, for the assessment of deep structures to the application. To assess possible interferences in the ultrasonographic evaluation of thyroid after application of hyperdiluted CaHA on the neck region. This was a prospective, blinded, and controlled study. Patients had their cervical regions treated with diluted CaHA (1:4). Ultrasonographic evaluations of thyroid were conducted on day 0 (pre-procedure), day 15, and day 60 by two radiologists blinded to the application. On day 0 no exclusion criteria were observed. On day 15 technical artifacts that difficulted the evaluation but did not make the complete assessment of the thyroid unable, were seen. On day 60 the artifacts of posterior acoustic shadowing were considerably reduced, not bringing any difficulty whatsoever for evaluation of the gland. Treatment of sagging neck skin with diluted CaHA in 1:4 does not negatively impact the ultrasonographic evaluation of the thyroid as early as 15 days, and particularly after 60 days from the procedure.J Drugs Dermatol. 2022;21(11):1243-1248. doi:10.36849/JDD.6877.