Pazelli, Alexandre Meira

Fibrous dysplasia (FD) is a benign bone neoplasm often considered a disease of childhood, with existing literature suggesting lesions typically become quiescent by young adulthood. Consequently, the presentations and surgical outcomes of adult patients remain poorly characterized. This retrospective review analyzed 50 adult patients treated surgically for craniofacial FD at a single institution between 1988 and 2024 to evaluate patterns of presentation, operative indications, and long-term outcomes. The cohort (54.0% male) had a mean follow-up of 15.8 years. Polyostotic involvement was present in 60.0% of patients, and the frontal bone was most affected (51.2%). The median age at presentation was 31 years, and the median age at initial surgery was 34.5 years. The most common surgical indications were visible growth (30.5%) and pain or headache (27.1%). Of the 59 surgeries performed to directly treat FD, bone contouring only was the most common initial operative approach (n=42), followed by en bloc resection and reconstruction (n=7). However, 12% of patients undergoing initial contouring required additional operations for continued growth. All secondary deformities requiring corrective surgery were ocular. In addition, several patients demonstrated delayed recurrence or progression decades after primary surgical intervention. These findings suggest that craniofacial FD may remain symptomatic or continue to progress into adulthood, challenging the traditional paradigm that these lesions necessarily become quiescent after skeletal maturity and highlighting the importance of long-term surveillance in the adult population.

Background: Sexual dimorphism in the facial skeleton is fundamental to aesthetics and gender perception. This study employs AI-assisted three-dimensional (3D) imaging to analyze morphological differences between males and females in the upper, mid, and lower facial regions. Methods: A retrospective analysis was conducted on 280 high-resolution craniofacial CT scans (147 females, 133 males) of adults aged 20 years and older. AI-assisted segmentation and modeling were performed using Materialise Mimics and 3-Matic software. The facial skeleton was divided into upper, mid, and lower regions for detailed morphometric evaluation. Statistical shape modeling (SSM) and heatmaps were used to visualize surface projection differences across age groups. Statistical comparisons were conducted to assess gender-based variation. Results: Significant sexual dimorphism was observed across all facial regions. In the upper face, males had greater interorbital width, frontotemporal brow width, inter-medial canthi distance, and more prominent frontal bossing. In the midface, males exhibited increased width, depth, and vertical height, with the most pronounced differences occurring in middle age. The lower face showed larger mandibular dimensions in males, including bigonial width, ramus height, and a sharper mental angle, while females had a more rounded chin and smoother mandibular contour. Heatmaps confirmed greater surface projection in male skeletons, particularly in the gonial and midfacial regions, with dimorphism decreasing with age. Conclusion: This represents the first large-sample CT study utilizing AI to comprehensively quantify facial skeletal dimorphism. Findings support the importance of gender-specific planning in facial reconstructive and aesthetic procedures.

Objective We aimed to understand the impact of Cranial Remolding Orthotic therapy (CRO) on the quality of life of both infants with positional deformational head shape abnormalities (PDHSAs), including plagiocephaly and brachycephaly, and their caregivers. Design Survey study. Setting A single, tertiary academic center. Patients, Participants Families of infants with PDHSAs who underwent CRO between 2007 and 2022. Interventions CRO. Main Outcome Measure(s) Subjective assessment of caregiver perspectives. Results We obtained 242 responses (72% male) from 1013 patients contacted (response rate 23.9%). CRO was initiated at a median age of 6 months (IQR 5-7 months), with a median treatment duration of 4 months (IQR 3-5 months). Insurance covered costs fully for 9.8% of respondents and partially for 47.0%; 43.2% paid completely out-of-pocket. Most were “very satisfied” or “satisfied” with head shape (89.2%) and ear position (93.3%). CRO did not impact children's sleep (75.2%), “never” or “rarely” impacted children's play (90.5%), and never impacted most families’ attendance of social events (91.3%). Hair loss was temporary in 29.9% and permanent in 0.8%. Most families did not find CRO burdensome (73.1%) and “never” or “rarely” felt fatigued (68.5%). Conclusions The study sheds light on the mental and social effects of CRO on patients and caregivers, as well as physical adverse effects associated with treatment. Overall, patients’ families expressed satisfaction with results and felt that administering CRO had minimal negative impacts on themselves and their children.

Surgical treatment and outcomes of fibrous dysplasia (FD) in pediatric patients are areas that have not been fully studied. The authors completed a retrospective review of 20 patients who had at least one surgery for craniofacial fibrous dysplasia before 18 years of age. Surgeries were categorized into 3 groups: bone contouring only; removal of the involved bone, contouring, and replacement of the contoured bone; or en bloc resection of the involved bone and reconstruction with an alloplastic material, bone allograft, or bone autograft obtained from non-involved sites. A total of 36 distinct surgical procedures were performed in 20 patients, with a mean number of 1.9 surgeries/patient (range 1–5). The maxilla was both the bone that was most commonly affected and most commonly operated on. The most common surgical indication was visible or palpable growth in 63.9% of cases. Bone contouring only was the initial surgery in 15 patients, of whom 9 patients (55.6%) had continued bone growth requiring subsequent surgeries. Removal, contouring, and replacement wasthe initial surgery in 1 patient, who required a secondary surgery. Four patients, all with monostotic calvarial disease, initially had an en bloc resection and reconstruction; none had recurrence. Patients with subsequent surgeries had a mean time to operation of 3.7 years (range 0.24–9.8). The recurrence rate and need for secondary surgical procedures were relatively high in patients who had bone contouring only. These patients tended to be patients with facial bone involvement more than calvarial involvement.

Background The management and use of antibiotics in pediatric ear lacerations lacks standardization. This study sought to provide a comprehensive review of these injuries and assess the impact of administering perioperative antibiotics on the incidence of infections after repair. Methods Retrospective review of all pediatric ear lacerations treated at our institution's emergency department (ED) between 1998 and 2024. Results A total of 246 patients (177 boys) were included. Patients aged 0–6 years were most affected (n = 117, 47.6%), with the peak between 2–5 years old (n = 78, 31.7%). Most lacerations were superficial (n = 145, 58.9%), followed by intermediate (n = 62, 25.2%), full thickness (n = 34, 13.9%), and split earlobe defects (n = 5, 2%). Most of the patients (n = 110, 54.7%) were managed by emergency medicine providers. Plastic and reconstructive surgery (n = 34, 16.9%) and otorhinolaryngology (n = 32, 15.9%) consultations were obtained when the lacerations affected cartilage (P < 0.001). Surgical repair included primary closure in 203 (82.5%), with 179 (88.2%) performed under local/topical anesthesia in the ED. Of patients with cartilage lacerations (n = 61), 48 had cartilage repair. Eight patients had preoperative intravenous antibiotics, while 105 (42.7%) received postoperative prophylactic oral antibiotics. Among those with intermediate and full-thickness injuries (n = 96), 67.7% were discharged on prophylactic oral antibiotics. Only 1 case of surgical site infection occurred in a patient with a superficial laceration. Conclusions Pediatric ear lacerations mostly affect boys aged 2–5 years and are usually repaired under local anesthesia in the ED. The incidence of infection is low, and the routine prescription of prophylactic oral antibiotics appears to have a limited impact on the overall incidence of surgical site infection. Further studies are needed to validate these findings.

Background: Mandible contour significantly influences facial appearance, framing the lower facial silhouette. Redefining mandibular contour is key for facial and neck rejuvenation. Yet, there is limited facial aging research across different lifespans and sexes. Here, we utilize artificial intelligence and advanced 3-dimensional (3D) analysis to elucidate mandibular aging patterns in male and female subjects. Methods: A retrospective analysis of facial computed tomography scans in White patients was conducted, categorizing subjects into 3 age groups (20–79 y) and stratifying them by sex. Artificial intelligence–assisted segmentation into 3D mandibles was done in Mimics v.25, and statistical shape modeling was used to create an average mandible for each group. Volume and linear measurements were assessed via 3D overlays. Results: Analysis of 280 mandibles demonstrated statistically significant aging changes in both sexes. Ramus height showed a marked decrease with age, by approximately 5.3 mm in women and 4.2 mm in men (P < 0.001). Interrami and intercondylar widths increased by a mean of 4–5 mm (P < 0.01). Women exhibited an increase in mandibular angle (P < 0.01), and bony resorption over the chin compared to men, who exhibited concentrated bone resorption at the gonion projection. Conclusions: Mandibular aging, independent of tooth loss, exhibits specific bone remodeling patterns by sex. Posteriorly, mandibular widths increase in both sexes, whereas ramus height decreases. Women experience more resorption at the anterior alveolar surface and chin than men. Statistical shape modeling effectively visualizes these patterns on a population level, bridging the gap between traditional aging research and current understanding.

Background: Venous thromboembolism (VTE) poses a major risk after abdominal contouring surgery, impacting morbidity and mortality. Despite various preventative strategies, surgeons are cautious about using enoxaparin for extended postoperative periods. This study aims to determine if a 7-day postoperative course of enoxaparin increases bleeding risks compared with a single dose of intraoperative unfractionated heparin in patients undergoing abdominal contouring surgery. Methods: A retrospective cohort analysis was performed on patients who underwent abdominoplasty or panniculectomy from August 2017 to October 2023. Patients were split into 2 groups: Group 1 received 5000 units of intraoperative unfractionated heparin in addition to 7 days of postoperative enoxaparin (40 mg daily); group 2 received only the intraoperative heparin dose. Primary outcomes included bleeding events and VTE incidence. Secondary outcomes were seroma, infection, surgical site dehiscence, necrosis, drain duration, and reoperation rates. Results: The study included 121 patients (111 women, 10 men), with 61 patients in group 1 and 60 in group 2. The average age was 49 ± 12 years, and the average body mass index was 29.8 ± 5 kg/m². No cases of VTE were reported. Postoperative bleeding occurred in 3 patients (4.9%) in group I and 2 patients (3.3%) in group 2, showing no statistically significant difference (P = 0.66). Secondary outcomes also showed no significant differences between the groups. Conclusions: Our study of 121 patients undergoing either abdominoplasty or panniculectomy demonstrated that administering enoxaparin for 7 days postoperatively is safe and does not increase the risk of bleeding.

Background: Controversy exists around the optimal timing of resection of nevus sebaceous (NS). The authors aim to determine optimal timing of NS resection and identify predictors of surgical outcomes and secondary intralesional neoplasms. Methods: Retrospective chart review of all patients with biopsy-proven NS diagnosis treated at the authors' institution between 1987 and 2024. Results: A total of 632 patients (317 females) underwent biopsy at a median age of 17 (interquartile range 11.7–36.9) years. Benign secondary intralesional neoplasms were found in 67 (10.6%) patients, with syringocystadenoma papilliferum being the most common. Malignant secondary intralesional neoplasms were diagnosed in 62 (9.8%) patients, with basal cell carcinoma being the most common. The incidence of secondary intralesional neoplasms was 3.9%, 24.4%, 36.05%, and 54%, in patients aged 0 to 20, 20 to 40, 40 to 60, and 60 to 80 years, respectively (P<0.001). Age and NS area were associated with an increased risk of developing benign and malignant intralesional neoplasms (P=0.01). Younger patients were more likely to need general anesthesia for excision (median age 10.42 versus 17 years, P<0.001). Surgical complications occurred in 10 cases, and 6 patients required unanticipated revision surgery. The risk of developing secondary intralesional neoplasms was similar across different NS anatomic regions (log-rank, P=0.09). Conclusion: Surgical excision of NS is safe and has an acceptable risk profile. The findings of this study support our historic practice of NS excision before puberty (before the accelerated growth phase) to reduce the risk of developing secondary intralesional neoplasms.

Objective: The pattern, rate, and natural history of bone flap resorption following cranioplasty with frozen, autologous bone flap has not been fully defined. The authors sought to quantify the progression and natural history of bone flap resorption. Methods: Patients who had craniectomy and delayed cranioplasty with stored, frozen bone flap between 2012 and 2022 were included in this study. Results: Ninety patients (63% male) were included, with a median age of 44.8 years (range: 4.2–84.4 y) at the time of autologous bone flap cranioplasty. Delayed, autologous cranioplasty occurred at a median time of 29.5 days (range: 2 d–10 y) from the index craniectomy. The median follow-up was 16.6 months (range: 3.4–85.4 mo). Radiographically quantifiable bone flap resorption occurred in 50 patients (56%). During the follow-up, the average percentage volume loss was 17%, with a nonlinear pattern of resorption. Following delayed, autologous cranioplasty, 11 patients had clinically significant bone flap resorption requiring secondary alloplastic cranioplasty at a median time of 13.8 months (range: 5.9–57.2 mo), with a mean percentage volume loss of 61%. Younger age was a risk factor for bone flap resorption (P < 0.05), whereas active smoking, presence of comorbidities, and number of days of bone flap storage were not risk factors for bone flap resorption. Penalized B-spline regression analysis showed that bone flap resorption followed a nonlinear pattern. Conclusion: Radiographically quantifiable bone flap resorption occurred in about 56% of patients following delayed autologous cranioplasty. Resorption followed a non-linear pattern. Young age is a risk factor for bone flap resorption.