1.A three-year retrospective study of pediatric and adolescent oral and maxillofacial trauma and infections at emergency department in a tertiary care medical hospital
Changwoo PARK ; Hyeonjin KIM ; Junghwan BAE ; Jihye RYU ; Chiho MOON ; Na-Rae CHOI ; Jae-Min SONG ; Jae-Yeol LEE ; Dae-Seok HWANG ; Yong-Deok KIM ; Sang-Hun SHIN ; Uk-Kyu KIM
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2025;51(6):362-368
Objectives:
Pediatric and adolescent oral and maxillofacial trauma and infections differ significantly from adults in anatomy, development, and immunity, making diagnosis and treatment challenging. This study retrospectively evaluated the etiology, clinical features, and management of oral and maxillofacial trauma and infections among patients aged 3 to 15 years.
Materials and Methods:
A retrospective review was conducted of 824 pediatric and adolescent patients who presented to the emergency department of Pusan National University Yangsan Hospital from January 2022 to December 2024. Patients were categorized based on chief complaints into trauma, infection, or other conditions. Primary analyses focused on trauma and infections, and secondary analyses included etiology, diagnosis, treatment, and outcomes.
Results:
Trauma accounted for 742 cases (90.0%) and infections for 44 cases (5.3%). Boys (65.7%) outnumbered girls (34.3%), and school-aged children (6-11 years) were most frequently affected (56.5%). Lacerations (49.2%) and abrasions (34.1%) were the most common traumas, followed by dental trauma (31.0%) and facial fractures (5.0%). Among fractures, the mandibular condyle (35.1%) was most commonly involved. Most fractures were managed non-surgically (54.0%), while 30.0% required surgery. Infections were mainly odontogenic abscesses (44.7%), cellulitis (36.4%), and sialadenitis (15.9%). Abscesses were treated with incision and drainage (57.1%) or antibiotics (19.1%), with 23.8% requiring hospitalization.
Conclusion
Trauma was the most frequent emergency cause in pediatric and adolescent patients, particularly among school-aged boys. Most cases were successfully managed with appropriate treatment. Early diagnosis and timely intervention are essential for favorable outcomes in pediatric maxillofacial emergencies.
2.Result of Radiotherapy for Esophagus Cancer.
Taesig JUNG ; Changwoo MOON ; Hayong YUM ; Chilyong YANG
Journal of the Korean Society for Therapeutic Radiology 1988;6(2):211-226
Among 165 patients of esophagus cancer treated by either radiation alone or postoperative radiation, median survival period was 6.6 months, 16% 3 years and 8% 5 years crude survival in biphasic plotting of survival curve semilogarithmically all nonresponder died within one year regardless of treatments and in responder each 1, 2, 3 years survival rate was 80%, 70%, 60% in the group of postoperative radiation among 20 patients (54% of 37 patients) respectively and 62%, 38%, 23% each in the group of radiation alone among 61 patients (48% of 128 patients) respectively, better survival rate of postoperative radiation vs radiation alone in 3 year (p<0.01). The most common cause of death was dysphagia 55%, and majority of patients died by failure to control the disease locally 62%, 88% of stricture were associated with persistenece of cancer in esophagus. 50% of patients was found to have locoregional metastatic nodes. Preoperative diagnostic failure rate was for metastatic locoregional nodes was 54%, for grossly metastatic nodes 29.7%, for blood borne organ metastasis 13.5%, and for local extent of the disease 14%. The residual cancer at surgical margin on postitive node was not effectively killed by either 5000 to 5500 cgy conventional radiation or 5290 to 5750 cgy with 115 cgy fraction in 2 times daily; hyperfractionated radiation. However hyperfractionation schedule decreased the both acute and late complications in this study.
Appointments and Schedules
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Cause of Death
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Constriction, Pathologic
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Deglutition Disorders
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Esophageal Neoplasms*
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Esophagus*
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Humans
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Neoplasm Metastasis
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Neoplasm, Residual
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Radiotherapy*
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Survival Rate

Result Analysis
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