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Study Design: Systematic review of hyaluronic acid (HA)-related complications. Objective: To systematically review all available literature including case reports and case series to identify a pattern for the management of vascular compromise resulting in facial skin ischemia and ocular manifestations following HA injection. Methods: This review was based on a systematic search of 3 electronic databases PubMed, CINAHL, and Scopus for all available literature including case series and case reports from database inception to July 2019. Only a total of 52 case reports/series were eligible for review and included 107 patients. Results: The reviewed literature available was comprised from case reports/series and indicated that management of both impending skin necrosis and visual disturbances is variable with no repetitive pattern of action. Yet, successful management is time dependent as early interventions stopped progression and, in some cases, even reversed adverse effects. Conclusion: Results found no universal protocol for achieving optimal results for adverse effects and as such, we present a step-by-step algorithm for the emergency management of complications following HA injection.

Autologous breast reconstruction is a standard procedure performed during mastectomy for the treatment of breast cancer. [1][2][3][4][5][6] The transverse rectus abdominis muscle (TRAM) and the deep inferior epigastric perforator (DIEP) are the most common flaps used, both of which are harvested from the lower abdomen. 4,7,8 To ensure flap viability, high-resolution imaging and meticulous surgical planning are required. The procedure itself can still involve complications, including venous congestion, fat necrosis in 1.28%-2.93% of cases, and even total flap loss in 1.16%-3.61% of all patients whether performed unilaterally or bilaterally, according to Serletti et al. 9 Virtual reality (VR) has recently emerged as a comprehensive tool for stereoscopic three-dimensional (3D) imaging since it provides an interactive, realistic, and intuitive understanding of anatomical and pathological Breast Original articleIntroduction: This study was designed to compare VR stereoscopical three-dimensional (3D) imaging with two-dimensional computed tomography angiography (CTA) images for evaluating the abdominal vascular anatomy before autologous breast reconstruction. Methods: This prospective case series feasibility study was conducted in two tertiary medical centers. Participants were women slated to undergo free transverse rectus abdominis muscle, unilateral or bilateral deep inferior epigastric perforator flap immediate breast reconstruction. Based on a routine CTA, a 3D VR model was generated. Before each procedure, the surgeons examined the CTA and then the VR model. Any new information provided by the VR imaging was submitted to a radiologist for confirmation before surgery. Following each procedure, the surgeons completed a questionnaire comparing the two methods. Results: Thirty women between 34 and 68 years of age were included in the study; except for one, all breast reconstructions were successful. The surgeons ranked VR higher than CTA in terms of better anatomical understanding and operative anatomical findings. In 72.4% of cases, VR models were rated having maximum similarity to reality, with no significant difference between the type of perforator anatomical course or complexity. In more than 70% of the cases, VR was considered to have contributed to determining the surgical approach. In four cases, VR imaging modified the surgical strategy, without any complications. Conclusions: VR imaging was well-accepted by the surgeons who commented on its importance and ease compared with the standard CTA presentation. Further studies are needed to determine whether VR should become an integral part of preoperative deep inferior epigastric perforator surgery planning.