Publications by authors named "Wei-Jin Hong"

7 Publications

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Three-Dimensional Computed Tomography Scanning of Temporal Vessels to Assess the Safety of Filler Injections.

Aesthet Surg J 2021 Feb 27. Epub 2021 Feb 27.

Department of Plastic and Reconstructive Surgery, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, China.

Background: Temple filler injection is one of the most common minimally invasive cosmetic procedures involving the face; however, vascular complications are not uncommon.

Objectives: This study aimed to investigate the anatomy of the temporal vessels and provide a more accurate protocol for temple filler injection.

Methods: Computed tomography (CT) scans of 56 cadaveric heads injected with lead oxide were obtained. We then used Mimics software to construct 3-dimensional (3D) images of the temporal vessels described by a coordinate system based on the bilateral tragus and right lateral canthus.

Results: In the XOY plane, the superficial temporal artery (STA), middle temporal artery (MTA), zygomatico-orbital artery (ZOA), posterior branch of the deep temporal artery (PDTA), and lateral margin of the orbital rim divide the temple into 4 parts (A, B, C, and D). The probabilities of the STA, MTA, ZOA, and PDTA appearing in parts A, B, C, and D were 30.73%, 37.06%, 39.48%, and 77.18%, respectively. In 3D images, these vessels together compose an arterial network that is anastomosed with other vessels, such as the external carotid, facial, and ocular arteries.

Conclusions: 3D CT images can digitally elucidate the exact positions of temporal vessels in a coordinate system, improving the safety of temple filler injections in a clinical setting.
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http://dx.doi.org/10.1093/asj/sjaa371DOI Listing
February 2021

The Effect of Previous Irradiation for Patients With Prosthetic Breast Reconstruction: A Meta-Analysis.

Aesthet Surg J 2021 Feb 23. Epub 2021 Feb 23.

Department of Plastic and Reconstructive Surgery, Guangdong Second Provincial General Hospital, Guangzhou, China.

Background: Results regarding immediate prosthetic breast reconstruction after postmastectomy radiation therapy (PMRT) have been inconsistent.

Objectives: The authors aimed to assess the efficacy and safety of PMRT before immediate prosthetic breast reconstruction for patients with breast cancer.

Methods: Electronic databases (PubMed, EmBase, and the Cochrane Library) were systematically searched to identify eligible studies from their inception until March 2020. The pooled odds ratio (OR) with 95% confidence intervals (CIs) was applied as an effect estimate and calculated using the random-effects model.

Results: Nineteen studies including a total of 6757 patients were selected for final meta-analysis. The pooled OR showed that PMRT was associated with a higher incidence of reconstruction failure (OR = 2.57; 95% CI =1.55-4.26; P < 0.001), capsular contracture (OR = 5.99; 95% CI = 3.12-11.47; P < 0.001), and overall complications (OR = 2.52; 95% CI = 1.68-3.79; P < 0.001). It was also associated with a lower incidence of patient satisfaction (OR = 0.29; 95% CI = 0.16-0.52; P < 0.001) and good aesthetic results (OR = 0.25; 95% CI = 0.12-0.52; P < 0.001) compared with those who did not undergo PMRT. These significant associations could be affected by study design, mean age, stage of immediate breast reconstruction, follow-up, and study quality.

Conclusions: Although PMRT is the standard adjuvant therapy for mastectomy patients treated with immediate implant-based breast reconstruction, PMRT for patients undergoing immediate implant-based breast reconstruction has been associated with high risks of reconstruction failure, capsular contracture, and overall complications as well as low incidences of patient satisfaction and good aesthetic results.

Level Of Evidence: 4:
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http://dx.doi.org/10.1093/asj/sjaa372DOI Listing
February 2021

Internal Mastopexy: A Novel Method of Filling the Upper Poles During Dual-Plane Breast Augmentation Trough Periareolar Incision.

Aesthetic Plast Surg 2021 Jan 8. Epub 2021 Jan 8.

Department of Plastic and Reconstructive Surgery, Guangdong Province, Guangdong Second Provincial General Hospital, 466 Middle Xin Gang Road, Guangzhou City, 510317, China.

Background: Breast ptosis is a deformity commonly found in patients seeking breast augmentation. Current mastopexy techniques rely on incisions on the breast to correct ptosis; nonetheless, they leave extensive scars. Having to opt for a visibly scarred breast over a ptotic breast can be a difficult choice.

Objectives: We sought an innovative internal suture mastopexy for hypomastia of mild breast ptosis.

Methods: A procedure that left a tiny scar on the nipple-areolar complex was introduced. This method was safe and efficient when combining mastopexy with augmentation.

Results: Overall, 53 patients underwent this operation in the Plastic and Cosmetic Department of Guangdong Second Provincial General Hospital from January 1, 2013, to June 30, 2017, with a mean follow-up of 38 ± 16 months. The pre-operation and post-operation SN-N lines (the distance from the sternal notch to the nipple) were 21.8 ± 1.2 cm and 20.7 ± 1.0 cm, respectively; the difference was statistically significant (P<0.05). The patients and surgeon expressed satisfaction with the procedure.

Conclusion: Based on the results of the present study, which included more than 50 patients, we believe that internal suture mastopexy can be used as an effective alternative hypomastia in patients with mild breast ptosis.

Level Of Evidence Iv: IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266. .
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http://dx.doi.org/10.1007/s00266-020-02098-yDOI Listing
January 2021

Helical nanofibers of -(perfluorooctanoyl)cysteine ethyl ester in coordination polymers of Ag.

Chem Commun (Camb) 2020 Dec;56(96):15133-15136

Department of Chemistry, College of Chemistry and Chemical Engineering, the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.

We propose using the formation of coordination polymers of Ag+ to probe differences between the perfluorinated alkyl chain and the alkyl chain by deriving a thiol ligand, N-(perfluoroalkanoyl)cysteine. Rapid formation in EtOH of P-/M-helical nanofibrils of high thermostability was found for N-(perfluorooctanoyl)-l-/d-cysteine ethyl esters at the μM level upon mixing with Ag+, but not for the octanoyl counterpart. This difference was also observed in terms of circular dichroism-enantiomeric excess dependence.
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http://dx.doi.org/10.1039/d0cc05989gDOI Listing
December 2020

Tomography of the Forehead Arteries and Tailored Filler Injection for Forehead Volumizing and Contouring.

Dermatol Surg 2020 12;46(12):1615-1620

Department of Plastic and Reconstructive Surgery, Guangdong Second Provincial General Hospital, Guangzhou City, Guangdong Province, People's Republic of China.

Background: The forehead is a challenging area for filler injection because of the risk of serious complications. Anatomy-based filler injection techniques help to avoid severe vascular complications.

Materials And Methods: Sixty-six cadaver heads were infused with adequate lead oxide contrast through the external carotid arteries, internal carotid arteries, facial artery, and superficial temporal artery. Three-dimensional computed tomography scans were reconstructed using validated algorithms. We measured the length and arc length of "beautiful" foreheads evaluated by 3 skilled surgeons.

Results: The frontal branch of the superficial temporal artery (FBSTA) was classified based on the main trunk as follows: Type I FBSTA (89.72%) took a sudden turn (89.56° ± 11.76°) once passing through the temporal crest, whereas Type II FBSTA (10.28%) barely turned (52.26° ± 6.81°) at the temporal crest. A total of 319 arteries passed through the midline in 48 cadaver heads. There were more superficial arteries (292 of 319) than deep arteries (27 of 319). The difference in the length and arc length of the forehead was 19.66 ± 4.35 mm.

Conclusion: This study introduces an effective technique for forehead filler injection that minimizes the risk of filler injection and improves patient satisfaction.
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http://dx.doi.org/10.1097/DSS.0000000000002561DOI Listing
December 2020

A case series: 3-dimensional computed tomographic study of the superior orbital vessels: Superior orbital arcades and their relationships with the supratrochlear artery and supraorbital artery.

J Am Acad Dermatol 2021 May 24;84(5):1364-1370. Epub 2020 Jun 24.

Department of Plastic and Reconstructive Surgery, Guangdong Second Provincial General Hospital, Guangzhou City, People's Republic of China; Second School of Clinical Medicine, Southern Medical University, Guangzhou City, People's Republic of China. Electronic address:

Background: Vascular complications from periorbital intravascular filler injection are major safety concerns.

Objective: To thoroughly describe the superior orbital vessels near the orbital rim and propose considerations for upper eyelid and forehead injections.

Methods: Fifty-one cadaver heads were infused with lead oxide contrast media through the external carotid artery, internal carotid artery, and facial and superficial temporal arteries. Computed tomography (CT) images were obtained after contrast agent injection, and 3-dimensional CT scans were reconstructed by using a validated algorithm.

Results: Eighty-six qualified hemifaces clearly showed the origin, depth, and anastomoses of the superior orbital vessels, which consistently deployed 2 distinctive layers: deep and superficial. Of all hemifaces, 59.3% had deep superior orbital vessels near the orbital rim, including 44.2% with deep superior orbital arcades and 15.1% with deep superior orbital arteries, which originated from the ophthalmic artery. Additionally, 97.7% of the hemifaces had superficial superior orbital arcades, for which 4 origins were identified: ophthalmic artery, superior medial palpebral artery, angular artery, and anastomosis between the angular and ophthalmic arteries.

Limitations: The arterial depth estimated from 3-dimensional CT needs to be confirmed by standard cadaver dissection.

Conclusion: This study elucidated novel arterial systems and proposed considerations for upper eyelid and forehead injections.
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http://dx.doi.org/10.1016/j.jaad.2020.06.082DOI Listing
May 2021

Theoretical basis and clinical practice for FUE megasession hair transplantation in the treatment of large area androgenic alopecia.

J Cosmet Dermatol 2021 Jan 28;20(1):210-217. Epub 2020 Apr 28.

Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, China.

Background: Large area androgenic alopecia patients seeking hair transplantation treatment has become common. FUE Megasession has become a choice for more and more people. Long-term in vitro preservation of hair follicles during FUE Megasession has become a new challenge.

Objective: To explore optimal in vitro preservation condition according to FUE Megasession long-period surgery time and to perform clinical practice to confirm the feasibility.

Methods: Human follicles were obtained from informed patients by FUE Megasession and preserved under different conditions. Live and dead staining with DAPI was used to assess the survival rate of cells. Hair follicles were preserved in vitro for 7 days under different conditions, and the extension of the hair shaft was observed. We also performed some clinical procedures to illustrate the effectiveness of these methods.

Results: Under the condition of 4℃ Ringer's solution, the death rate of hair follicle cells was lower than that of the rest. 4℃ Ringer's solution supported superior growth of the hair follicle unit according to organ culture. 8-h preservation in 4℃ Ringer's solution was kept as high survival rate as the traditional hair transplantation surgery(P > .05). Clinical procedures confirmed the feasibility of FUE Megasession hair transplantation surgery.

Conclusion: 4℃ Ringer's solution in vitro preservation is optimal for clinical FUE Megasession surgery which ensures the hair follicle survival rate and postoperative results.
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http://dx.doi.org/10.1111/jocd.13432DOI Listing
January 2021