Delayed sclerosing granulomatous reaction to dermal filler injection of poly-hydroxyethyl-methacrylate suspended in hyaluronic acid: Histochemical and confocal laser scanning microscopical analysis

Ultrasonographic features of nonvascular complications of hyaluronic acid fillers: a retrospective study at a reference center for dermatologic ultrasonography

Hyaluronic acid filler injections have been associated with early, temporary, and delayed-onset complications. High-resolution ultrasound with Doppler analysis has been increasingly used to detect and identify such complications. We comprehensively describe the most common ultrasonographic findings of nonvascular complications associated with hyaluronic acid filler injections. This retrospective, cross-sectional, observational study was conducted at a reference center for dermatologic ultrasound in Bogotá, Colombia. Ultrasound reports documented the ultrasonographic findings of nonvascular complications of hyaluronic acid filler injections. Fifty-two complications were documented in a cohort of 50 patients (women, 88%). The infraorbital region was the most common site affected (23%), followed by the nasolabial region (22%). The Tyndall effect was the most common complication (25% of all), followed by changes in rheology (21%) and pseudosarcoidal (foreign body granuloma) reaction (15%). The Tyndall effect stood out for its distinctive ultrasonographic characteristics. We discuss the ultrasonographic findings and pathogenesis of other complications, including filler migration, early hypersensitivity, aseptic abscess, overcorrection, and filler material interaction. The clinical presentation of hyaluronic acid filler complications can be confusing, delaying timely diagnosis and treatment. High-resolution ultrasound with Doppler analysis is a valuable tool for avoiding unnecessary treatments and ensuring timely diagnosis and treatment.

The emerging topic of injected cosmetic fillers in the perinasal region of dromedary camels: ultrasonographic and radiographic verification

Background

Dermal cosmetic fillers have been commonly used in camels in the last few years in Gulf countries.

Aim

This study aimed to describe the radiographic as well as sonographic findings of injected cosmetic fillers in Arabian camel perinasal region in beauty shows.

Methods

A total number of (n = 11,626) Arabian camels (Camelus dromedarius) were thoroughly investigated for injection of cosmetic fillers in the perinasal area. The age of the camels was 6 months to 10 years, and their weights were 400-650 kg. In parallel, a control group consisting of 30 age/weight-matched non-injected camels was used. Of the 11,626 examined camels, 25 animals (0.0.002%) were injected with cosmetic fillers in the perinasal region. Of the 25 camels, 19 (76%) were females and 6 (24%) were males. Radiographic examinations were carried out for the 25 injected camel perinasal regions.

Results

Ultrasonographic examination of the injected perinasal regions revealed precise discrimination of the filler material, which appeared hypo-echogenic in 17 camels (68%) and with anechoic spots in the remaining 8 camels (32%). Variable degrees of swelling caused by the injection of moderate and large quantities of fillers were noted by radiographic assessment, the injected cosmetic filler was precisely diagnosed in the perinasal region as grey in color having soft tissue density in obtained radiographs.

Conclusion

In conclusion, radiographic and ultrasonographic examinations are reliable, accurate, and non-invasive diagnostic imaging techniques that can precisely discriminate a filler agent in the soft tissues and determine the situ and size of cutaneous deposits in dromedary camels (C. dromedarius).

Granulomatous Reaction to Dermal Injection of Growth Factors from Umbilical Cord Blood-Derived Mesenchymal Stem Cells: A Case Report

Use of stem cells to treat various diseases in dermatology has been of interest. Conditioned media with the growth factors secreted from stem cells has been used as a topical agent. We report a case of foreign body granulomas that appeared days after dermal injection of the conditioned media mimicking scars at all injection sites.

Complications after cosmetic periocular filler: prevention and management

Soft tissue fillers are a mainstay in contemporary, minimally invasive facial rejuvenation procedures owing to timely results and minimal recovery period. Although associated with a low complication rate, soft tissue fillers are not without risk. Complications range from mild superficial skin irregularities to granuloma formation to vascular occlusion leading to skin necrosis or even blindness. Fillers vary in composition, elasticity, hydrophilicity and duration of effect that is tailored to specific cosmetic indications. Selecting the right product for the desired effect can cut down on unwanted outcomes. Severe adverse events can be avoided with safe injection technique, early recognition of symptoms and a thorough knowledge of the local anatomy. This review outlines several complications all providers should recognize and discusses strategies for their prevention and management.