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.

Vertebral artery injury is common in cervical trauma, and can lead to infarction in some patients with potentially fatal outcomes. The authors encountered a patient with posterior inferior cerebellar artery infarction resulting from preoperative vertebral artery injury after anterior cervical discectomy and fusion and posterior decompression and fusion in a 44-year-old male after unilateral cervical facet joint fracture (compression-extension type injury). This paper reports these imaging findings and relevant clinical studies for this case.

Vertebral compression fractures are the most common type of osteoporotic fractures. In addition to osteoporosis, however, it can occur secondary to primary malignant conditions or non-skeletal primary neoplasm. Multiple myeloma is a neoplastic disease of a B cell origin in which malignant plasma cells accumulate in the bone marrow. Bone involvement is common, most commonly affecting the spine. These vertebral compression fractures account for the most common cause of increased mortality and morbidity in multiple myeloma patients.This paper reports a case in which unsuspected multiple myeloma was diagnosed by bone biopsy during percutaneous kyphoplasty in a patient with multiple vertebral compression fractures.

Vertebral compression fractures are the most common type of osteoporotic fractures. In addition to osteoporosis, however, it can occur secondary to primary malignant conditions or non-skeletal primary neoplasm. Multiple myeloma is a neoplastic disease of a B cell origin in which malignant plasma cells accumulate in the bone marrow. Bone involvement is common, most commonly affecting the spine. These vertebral compression fractures account for the most common cause of increased mortality and morbidity in multiple myeloma patients.This paper reports a case in which unsuspected multiple myeloma was diagnosed by bone biopsy during percutaneous kyphoplasty in a patient with multiple vertebral compression fractures.

Vertebral compression fractures are the most common type of osteoporotic fractures. In addition to osteoporosis, however, it can occur secondary to primary malignant conditions or non-skeletal primary neoplasm. Multiple myeloma is a neoplastic disease of a B cell origin in which malignant plasma cells accumulate in the bone marrow. Bone involvement is common, most commonly affecting the spine. These vertebral compression fractures account for the most common cause of increased mortality and morbidity in multiple myeloma patients.This paper reports a case in which unsuspected multiple myeloma was diagnosed by bone biopsy during percutaneous kyphoplasty in a patient with multiple vertebral compression fractures.

Background: s/Aims: Reported incidence of extrahepatic bile duct cancer is higher in Asians than in Western populations. Korea, in particular, is one of the countries with the highest incidence rates of extrahepatic bile duct cancer in the world. Although research and innovative therapeutic modalities for extrahepatic bile duct cancer are emerging, clinical guidelines are currently unavailable in Korea. The Korean Society of Hepato-Biliary-Pancreatic Surgery in collaboration with related societies (Korean Pancreatic and Biliary Surgery Society, Korean Society of Abdominal Radiology, Korean Society of Medical Oncology, Korean Society of Radiation Oncology, Korean Society of Pathologists, and Korean Society of Nuclear Medicine) decided to establish clinical guideline for extrahepatic bile duct cancer in June 2021. Methods: Contents of the guidelines were developed through subgroup meetings for each key question and a preliminary draft was finalized through a Clinical Guidelines Committee workshop. Results: In November 2021, the finalized draft was presented for public scrutiny during a formal hearing. Conclusions The extrahepatic guideline committee believed that this guideline could be helpful in the treatment of patients.

Background: Adrenocortical carcinomas (ACCs) are rare tumors with aggressive but varied prognosis. Stage, Grade, Resection status, Age, Symptoms (S-GRAS) score, based on clinical and pathological factors, was found to best stratify the prognosis of European ACC patients. This study assessed the prognostic performance of modified S-GRAS (mS-GRAS) scores including modified grade (mG) by integrating mitotic counts into the Ki67 index (original grade), in Korean ACC patients. Methods: Patients who underwent surgery for ACC between January 1996 and December 2022 at three medical centers in Korea were retrospectively analyzed. mS-GRAS scores were calculated based on tumor stage, mG (Ki67 index or mitotic counts), resection status, age, and symptoms. Patients were divided into four groups (0–1, 2–3, 4–5, and 6–9 points) based on total mS-GRAS score. The associations of each variable and mS-GRAS score with recurrence and survival were evaluated using Cox regression analysis, Harrell’s concordance index (C-index), and the Kaplan–Meier method. Results: Data on mS-GRAS components were available for 114 of the 153 patients who underwent surgery for ACC. These 114 patients had recurrence and death rates of 61.4% and 48.2%, respectively. mS-GRAS score was a significantly better predictor of recurrence (C-index=0.829) and death (C-index=0.747) than each component (P<0.05), except for resection status. mS-GRAS scores correlated with shorter progression-free survival (P=8.34E-24) and overall survival (P=2.72E-13). Conclusion mS-GRAS scores showed better prognostic performance than tumor stage and grade in Asian patients who underwent surgery for ACC.