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Valencia‐Sanchez, Bastien A.

0000-0002-1957-7892

Mayo Clinic

Mayo Clinic in Florida

Citations 18

Endoscopic Retrieval of Displaced Maxillary Third Molar Crown: A Pediatric Endonasal Approach
Valencia, Bastien A. , Hsue, Victor , Leuin, Shelby C., Valencia‐Sanchez, Bastien A. , Patel, Vijay A

Ear, Nose & Throat Journal | October 24, 2025 | Volume: 104 | Issue: 3_suppl | Pages: No page available

10.1177/01455613251386783 Get It

Iatrogenic displacement of third molars is a rare but significant complication of dental extractions, particularly in children where unique anatomic and developmental factors pose additional challenges. This report describes the case of a 12-year-old female who presented with a displaced maxillary third molar crown into the left maxillary sinus following dental extraction. This displacement resulted in acute orbital cellulitis, which was initially managed with oral antibiotic therapy. Endoscopic endonasal retrieval of the foreign body 4 months later was recommended after the initial infection was treated to reduce the risk of recurrent orbital and/or sinonasal infections. Surgical planning incorporated intraoperative navigation with existing cone beam computed tomography to minimize radiation exposure. The procedure was successful with no perioperative complications. This case highlights the importance of prompt recognition, careful surgical planning, and utilization of minimally invasive approaches to optimize outcomes while minimizing craniofacial morbidity in pediatric patients.
Complex Single-Stage Juvenile Nasopharyngeal Angiofibroma Resection: A Hybrid Pediatric Endoscopic Endonasal and Transmaxillary Approach
Valencia, Bastien A. , Plata, Hector Fuentes, Kim, Jeeho D. , Levy, Danielle, Nation, Javan , Pannell, J. Scott, Patel, Vijay A. , Levy, Michael L. , Valencia‐Sanchez, Bastien A. , Patel, Vijay A , Plata, Hector, Brandel, Michael G. , Lévy, Michaël

Operative Neurosurgery | June 16, 2025 | Volume: 30 | Issue: 5 | Pages: 740-744

10.1227/ons.0000000000001662 Get It

BACKGROUND AND IMPORTANCE: Juvenile nasopharyngeal angiofibroma (JNA) is a rare, locally aggressive vascular tumor that primarily affect adolescent males. This work illustrates a step-by-step surgical approach of an advanced-stage JNA resection in a prepubescent 5-year-old child, utilizing a hybrid endoscopic endonasal and transmaxillary approach that provides highly effective results without employing traditional open techniques. CLINICAL PRESENTATION: A previously healthy 5-year-old male presented with one-year history of nasal obstruction, mouth breathing, and recurrent otitis media. The patient was found to have a large, space-occupying hypervascular tumor obstructing the nasopharynx. Preoperative radiographic imaging revealed an extensive heterogeneous, avidly enhancing mass that occupied the nasopharynx, right pterygopalatine fossa, infratemporal fossa, masticator space, and middle cranial fossa. Following superselective endovascular embolization, a hybrid endoscopic endonasal approach was planned for JNA resection, incorporating an anterior maxillotomy to allow for direct access to lateral compartments not classically amenable to conventional transnasal corridors. CONCLUSION: This study demonstrates the technical feasibility of a combined endoscopic endonasal and transmaxillary approach for single-stage JNA resection with intracranial extension in pediatric patients. Key principles include tumor embolization, dynamic endoscopic visualization, avoidance of brain retraction, direct access to critical neurovascular structures, and minimizing craniofacial morbidity.
Association between Objective and Subjective Olfactory Dysfunction in SARS-CoV-2-Positive Patients Undergoing Skull Base Surgery
Valencia‐Sanchez, Bastien A. , Wilson, Penny , Najmi, Natasha N. , Alhalabi, Alaa , Chaichana, Kaisorn L. , Donaldson, Angela M. , Valencia, Bastien A. , Wilson, Prishae , Chaichana, Kaisorn

Journal of Neurological Surgery Part B: Skull Base | May 23, 2025 | Volume: 87 | Issue: 03 | Pages: 345-351

10.1055/a-2599-4262 Get It

Abstract This study aimed to investigate the association between objective and subjective olfactory assessments in patients with recent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection undergoing endoscopic endonasal skull base surgery (EESBS). Retrospective cohort study. Academic medical center. Adult patients with and without recent SARS-CoV-2 infection who underwent EESBS for sellar and parasellar lesion resection between 2020 and 2024 at the Mayo Clinic in Florida, Jacksonville, FL. Pre- and postoperative self-reported olfactory dysfunction and University of Pennsylvania Smell Identification Test (UPSIT) scores were collected. Patients with recent SARS-CoV-2 infection had a similar rate of discrepant preoperative objective olfactory assessments (38.2%, 26/68) compared with SARS-CoV-2-negative patients (39.9%, 127/318). SARS-CoV-2-positive patients were twice as likely to report postoperative subjective olfactory dysfunction (46.2%, 12/26) compared with SARS-CoV-2-negative patients (18.1%, 23/127, p = 0.002). There was no statistically significant difference in the mean preoperative (p = 0.162) or postoperative (p = 0.724) UPSIT scores between both groups. Patients with recent SARS-CoV-2 infection and discrepant preoperative objective olfactory assessments were twice as likely to self-report olfactory dysfunction following EESBS compared with SARS-CoV-2-negative controls. This increase in self-reported olfactory dysfunction was not accompanied by changes in objective psychophysical testing. These findings suggest that SARS-CoV-2 infection may impact subjective olfactory recovery following EESBS.
Molecular Profiling of Nasopharyngeal Carcinoma Using the AACR Project GENIE Repository
Hsia, Beau , Sure, Asritha , Dongre, Roshan , Jo, Nicolas J. , Kuzniar, Julia , Bitar, Gabriel , Alshaka, Saif, Kim, Jeeho D. , Valencia‐Sanchez, Bastien A. , Brandel, Michael G. , Sato, Mariko , Levy, Michael L. , Polster, Sean P. , Patel, Vijay A. , Valencia, Bastien A. , Alshaka, Saif A , Polster, Sean P , Patel, Vijay A , Brandel, Michael G , Sato, Mariko , Hsia, Beau , Crawford, John Ross

Cancers | May 1, 2025 | Volume: 17 | Issue: 9 | Pages: 1544

10.3390/cancers17091544 Get It

Background: Nasopharyngeal carcinoma (NPC) is a rare head and neck cancer arising from the mucosal lining of the nasopharynx, for which systemic therapeutic options remain scarce, reflecting the limited characterization of its genomic profile. This study utilized a large patient-level genomic repository to characterize genetic alterations, identify potential therapeutic targets, and improve disease modeling in NPC. Methods: A retrospective analysis of NPC samples was conducted using the AACR Project GENIE database. Targeted sequencing data were analyzed for recurrent somatic mutations, tumor mutational burden, and chromosomal copy number variations, with significance set at p < 0.05. Results: Frequent mutations were identified in KMT2D (20%), TP53 (16%), CYLD (9.6%), NFKBIA (6.4%), and PIK3CA (5.6%), implicating the p53, NF-κB, and PI3K pathways in NPC development. Notably, significantly distinct mutational profiles were observed based on both sex and race, with female patients exhibiting higher frequencies of PIK3C2G, ETV6, and CDKN1B mutations and non-Asian patients showing enrichment in KDM5A, CCND2, and TP53 mutations. Conclusions: This study presents a detailed genomic profile of NPC, identifying key mutations within established cancer-associated pathways. The identification of frequently mutated pathways (p53, NF-κB, and PI3K) suggests potential targets for novel therapies. Furthermore, distinct mutational landscapes in female and Asian NPC patients offer possibilities for precision therapeutic interventions.
Utility of Nasal Debridement Following Pediatric Functional Endoscopic Sinus Surgery: A Scoping Review
Kim, Jeeho D. , Valencia‐Sanchez, Bastien A. , Hsia, Beau , Alshaka, Saif, Bitar, Gabriel , Patel, Vijay A. , Patel, Vijay A , Hsia, Beau

Sinusitis | April 10, 2025 | Volume: 9 | Issue: 1 | Pages: 6

10.3390/sinusitis9010006 Get It

The role of second-look endoscopy and debridement (SLED) remains uncertain in children due to the perceived need for additional general anesthesia following their initial functional endoscopic sinus surgery (FESS) while mitigating risks and healthcare costs. This comprehensive review synthesizes current evidence on SLED in children, focusing on its practice pattern and treatment outcomes. This review was designed and performed using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews Protocol. Independent queries of the PubMed Central, MEDLINE, and Bookshelf databases were performed. A total of 53 relevant, unique articles were initially identified; 12 articles were ultimately deemed appropriate for inclusion in final analysis. The most common indication for FESS was chronic rhinosinusitis or recurrent sinus infections while that for SLED under general anesthesia varied from institutional practice patterns to surgeon preference. No meaningful comparison of outcomes was possible as the “success rates” of FESS with or without SLED were largely based on unvalidated questionnaires and equally subjective surgeon assessments. Even when looking at outcomes based on revision rates, FESS with SLED was considered successful between 60.5% and 95.6% of the time, with a mean of 84.2%, while FESS without SLED was successful between 71.0% to 96.4% of the time, with a mean of 86.3%. However, no randomized, controlled studies were available in the pediatric literature pertaining to FESS with or without SLED. Moreover, it became apparent that previous conclusions on the utility of SLED were based on the outcomes of FESS following one single SLED under general anesthesia vs. no SLED. As such, there is an unmet need to examine the utility of serial, office-based SLED in children to better elucidate its utility in pediatric FESS.
Discrepancy between Subjective and Objective Olfactory Function in Patients Undergoing Endoscopic Endonasal Skull Base Surgery: Impact of Prior SARS-CoV-2 Infection
Valencia‐Sanchez, Bastien A. , Alhalabi, Alaa , Wilson, Prishae, Najmi, Natasha N. , Donaldson, Angela M. , Wilson, Prishae

Journal of Neurological Surgery Part B: Skull Base | February 7, 2025 | Volume: 86 | Issue: No issue available | Pages: No page available

10.1055/s-0045-1803377 Get It

Health‐State Utility Values in Patients Affected by Flaccid and Non‐Flaccid Facial Paralysis
Valencia‐Sanchez, Bastien A. , Bartho, Murray J. , Krippaehne, Elise , Mace, Jess C. , Loyo, Myriam , Valencia, Bastien A. , Krippaehne, Elise

Otolaryngology–Head and Neck Surgery | February 7, 2025 | Volume: 172 | Issue: 5 | Pages: 1570-1578

10.1002/ohn.1163 Get It

AbstractObjectiveThe primary goal of this study was to measure health‐state utility values (HUVs) in patients with facial paralysis before and after treatment. A secondary objective was to compare these values with those of other chronic diseases and currently available treatments.Study DesignA retrospective chart review.SettingA tertiary medical center.MethodsAdults with flaccid and non‐flaccid facial paralysis were included. Baseline demographics, medical comorbidities, facial paralysis history, treatment details, and disease‐specific quality‐of‐life scores were collected. Utility values were derived using the Short‐Form 6D health index at baseline and after treatment.ResultsThe mean baseline Short‐Form 6D utility value for patients with facial paralysis (n = 134) was 0.73 (± 0.14) (95% confidence interval [CI]: 0.71‐0.75). Baseline utility values significantly correlated with disease‐specific quality of life as measured by the Facial Clinimetric Evaluation Scale (r = 0.400; P < .001), but not with Sunnybrook Facial Grading Scale or Synkinesis Assessment Questionnaire scores. Post‐treatment utility values showed a mean improvement of 0.03 (95% CI: −0.01 to 0.08; P = .14) in the overall cohort. The flaccid group showed a greater average improvement compared to the non‐flaccid group (0.05 [± 0.17] vs 0.02 [± 0.17]; P = .62).ConclusionPatients with flaccid and non‐flaccid facial paralysis reported HUVs that were significantly lower than the US population norm. Treatment improved utility values in both groups. These findings provide initial data for future cost‐effectiveness analyses of surgical and non‐surgical treatment options for facial paralysis.
Genomic Characterization of Chordoma: Insights from the AACR Project GENIE Database
Hsia, Beau, Bitar, Gabriel , Alshaka, Saif, Kim, Jeeho D. , Valencia‐Sanchez, Bastien A. , Brandel, Michael G. , Sato, Mariko , Levy, Michael L. , Patel, Vijay A. , Polster, Sean P. , Brandel, Michael G , Sato, Mariko , Patel, Vijay A , Polster, Sean P , Hsia, Beau , Faraji, Farhoud , Crawford, John Ross

Cancers | February 5, 2025 | Volume: 17 | Issue: 3 | Pages: 536

10.3390/cancers17030536 Get It

Background: Chordoma is a rare primary tumor originating from embryonic notochord remnants, with limited systemic therapeutic options due to a poor understanding of its genomic landscape. This study aims to characterize the genetic alterations in chordoma using a large national patient-level genomic repository, the AACR Project GENIE, to identify potential therapeutic targets and improve disease modeling. Methods: A retrospective analysis of chordoma samples was conducted using the AACR Project GENIE database. Targeted sequencing data were analyzed for recurrent somatic mutations, tumor mutational burden, and chromosomal copy number variations, with significance set at p < 0.05. Results: Frequent mutations were observed in genes associated with SWI/SNF complex affecting chromatin remodeling (SETD2, PBRM1, ARID1A). Mutations were also common among the TERT promoter regions, and cell cycle regulation (CDKN2A). Significant co-occurrences were identified among PBRM1, BRCA2, and KMT2D mutations. CDKN2A/B deletions were enriched in metastatic tumors, and pediatric cases demonstrated distinct mutation profiles compared to adults. Conclusions: This study provides a genomic profile of chordoma, identifying key mutations and potential therapeutic targets. These findings highlight the roles of chromatin remodeling and cell cycle pathways in chordoma biology, offering insights for future precision medicine approaches and therapeutic interventions.