Artur Fahradyan

Updates on the Management of Non-Melanoma Skin Cancer (NMSC)

Non-melanoma skin cancers (NMSCs) are the most common malignancy worldwide, of which 99% are basal cell carcinomas (BCCs) and squamous cell carcinomas (SCCs) of skin. NMSCs are generally considered a curable diseases, yet they currently pose an increasing global healthcare problem due to rising incidence. This has led to a shift in emphasis on prevention of NMSCs with development of various skin cancer prevention programs worldwide. This article aims to summarize the most recent changes and advances made in NMSC management with a focus on prevention, screening, diagnosis, and staging.

A Single Lab Test to Aid Pierre Robin Sequence Severity Diagnosis

Objective: The workup of patients with Pierre Robin sequence (PRS) consists of a physical examination, O2 saturation, and polysomnography to determine the severity of respiratory obstruction and need for surgery. We suggest that capillary blood gas (CBG) may be a better physiologic representation of airway obstruction and should be routinely used in the management of patients with PRS. Design: This is a multicenter study based on a retrospective review of medical records. Setting: The study was performed at tertiary care centers. Interventions: Patients with PRS <1 year old underwent mandibular distraction osteogenesis. Main Outcome Measure: Using successful treatment outcome as a reference standard, receiver operating characteristic (ROC) curve was used to determine the accuracy of the diagnostic test and values for the best sensitivity and specificity to determine the need for surgical intervention. Results: Of 73 patients, 48 had sporadic PRS, 23 had syndromes, 2 had micrognathia, not otherwise specified. Mandibular distraction osteogenesis was performed in 62 patients at a mean age of 39 days. The mean initial Apnea-Hypopnea Index (AHI) in nonsurgical versus surgical groups was 10 versus 31 (P = .063), pH 7.41 versus 7.34 (P = .003), pCO2 43 versus 56 (P < .001), and HCO3 27 versus 30 (P = .022). The ROC curve showed that pCO2 of 49.5 has the best specificity (100%) and sensitivity (72.6%) profile in terms of need for definitive airway. Conclusion: A simple CBG heel stick may better predict the physiologic effects of obstructive apnea; therefore, it should be added to the algorithm of PRS workup.

Impact of the Distance of Maxillary Advancement on Horizontal Relapse After Orthognathic Surgery

Background: The maxillary horizontal relapse following Le Fort I advancement has been estimated to be 10% to 50%. This retrospective review examines the direct association between the amounts of maxillary advancement and relapse. We hypothesize that the greater the advancement, the greater the relapse amount. Method: Patients with class III skeletal malocclusion underwent maxillary advancement with either a Le Fort I or a Le Fort I with simultaneous mandibular setback (bimaxillary surgery) from 2008 to 2015. Patients were assessed for a history of cleft lip or cleft palate. Patients with known syndromes were excluded. Cephalometric analysis was performed to compare surgical and postsurgical changes. Results: Of 136 patients, 47.1% were males and 61.8% had a history of cleft. The mean surgery age was 18.9 (13.8-23) years and 53.7% underwent a bimaxillary procedure. A representative subgroup of 35 patients had preoperative, immediate postoperative, and an average of 1-year postoperative lateral cephalograms taken. The mean maxillary advancement was 6.3 mm and the horizontal relapse was 1.8 mm, indicating a 28.6% relapse. A history of cleft and amount of maxillary advancement were directly correlated, whereas bone grafting of the maxillary osteotomy sites was inversely correlated with the amount of relapse (P < .05). Conclusions: Our data suggest positive correlation between amount of maxillary advancement and horizontal relapse as well as a positive correlation between history of cleft and horizontal relapse. Bone grafting of the maxillary osteotomy sites has a protective effect on the relapse.

Ameloblastic Carcinoma In Situ: Review of Literature and a Case Presentation in a Pediatric Patient

Ameloblastic carcinomas are rare malignant lesions with 3 mandibular pediatric cases reported in the literature. We present a case of ameloblastic carcinoma in situ in a 15-year-old male with a right mandibular cystic lesion on computed tomography. The incisional biopsy revealed plexiform ameloblastoma. Due to the infiltrating and aggressive nature of the tumor, the patient underwent hemimandibulectomy and immediate reconstruction with a vascularized osteocutaneous fibula free flap. The final pathology was read as ameloblastic carcinoma in situ. Given the rarity of this disease in the pediatric population, this case report may be a valuable addition to the current literature.

Ectropion in Facial Tissue Expansion in the Pediatric Population: Incidence, Risk Factors, and Treatment Options.

Background Despite advances in the field of tissue expansion, the face is especially difficult to reconstruct using this technique due to its dynamic nature and high incidence of distortional scarring. This article aimed to review complications seen in pediatric facial tissue expansion, specifically ectropion, as well as its restorative treatment. Methods A retrospective chart review of pediatric patients treated by tissue expansion for congenital facial lesions, trauma, or burns at Childrens Hospital Los Angeles from January 2000 to present was performed. Patients were analyzed for preoperative diagnosis, reconstruction area, tissue expander location, number and fill volume of expanders, incidence of complications, including ectropion, and type of revision surgery. Results A total of 88 patients with 150 expander reconstructions were examined. The total complication rate was 43.1% with an 11.3% rate of ectropion. Of the 10 cases of ectropion, 9 were treated with canthoplasty, whereas 1 was managed conservatively. In addition to canthoplasty, full-thickness skin graft was preformed in 1 patient, Z-plasty in 1, and lid switch in 2. Discussion Tissue expansion is a safe and effective method of reconstruction for facial defects in the pediatric population despite complication rates being higher than other areas of the body. Specifically, ectropion can be a devastating complication, often requiring surgical correction. As such, careful planning should go into orientation and design of the reconstruction, and staged procedures should be strongly considered. Additionally, and possibly the most important, is setting patient and parental expectation about the possibility of ectropion and the necessity often for multiple corrective surgeries.