• Archives of Craniofacial Surgery
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• v.21 no.5
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• pp.329-333
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• 2020

Mucinous cystadenoma, one of the subtypes of cystadenomas, is a rare benign salivary gland tumor. Most of the cases reported tumors presenting as asymptomatic, slow growing, single masses, primarily occurring in the parotid glands, buccal mucosa, and hard palate. This report describes a case of multiple mucinous cystadenomas that presented as subcutaneous swellings in both cheeks, which were mistaken for a benign subcutaneous tumor. A complete surgical excision was performed through an intraoral incision. There were no recurrences or complications. A diagnosis of mucinous cystadenoma was made by histopathological examination. Mucinous cystadenomas are differentiated from other salivary gland tumors based on the pathological findings. A malignant transformation is also possible. Preoperative imaging cannot identify mucinous cystadenomas because of their small size and atypical features, and needle biopsy has its limitations in such salivary gland tumors. Therefore, accurate diagnosis and treatment through surgical excision become important.

• Journal of Korean Neurosurgical Society
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• v.54 no.5
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• pp.426-430
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• 2013

The prognosis of solitary plasmacytoma varies greatly, with some patients recovering after surgical removal or local fractional radiation therapy, and others progressing to multiple myeloma years later. Primary detection of progression to multiple myeloma is important in the treatment of solitary plasmacytoma. There have been several analyses of the risk factors involved in the early progression to multiple myeloma. We describe one case of solitary plasmacytoma of the lumbar vertebra that was treated with surgical decompression with stabilization and additional radiotherapy. The patient had no factors associated with rapid progression to multiple myeloma such as age, size, immunologic results, pathological findings, and serum free light chain ratio at the time of diagnosis. However, his condition progressed to multiple myeloma less than two months after the initial diagnosis of solitary plasmacytoma. We suggest that surgeons should be vigilant in watching for rapid progression to multiple myeloma even in case that the patient with solitary plasmacytoma has no risk factors for rapid progression to multiple myeloma.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.43 no.4
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• pp.262-266
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• 2017

Hemangioma is the most common benign tumor of a vascular origin, and is characterized by the abnormal proliferation of blood vessels. Intramuscular hemangioma (IMH) usually involves the skeletal muscles of the trunk or limbs, but rarely occurs in the head and neck region. This case report presents a patient with IMH showing multiple phleboliths in the buccal cheek. A 13-year-old boy was referred for the evaluation and management of painful swelling of the left cheek that had gradually increased in size over a 6 year duration. The examination revealed a palpable firm mass. Reddish-blue buccal mucosa color was observed with an aciniform shape. Preoperative magnetic resonance imaging (MRI) showed a vascular tumor in the left side adjacent to the buccinator and depressor orbicularis oris muscles. Surgical resection under general anesthesia was performed via the intraoral approach. The mass and phleboliths were extracted successfully. A histopathological examination confirmed the diagnosis of IMH. In conclusion, clinicians should be aware of the possibility of IMH in cases of a palpable mass with multiple nodules deep within the muscle in the buccal cheek. Among the several diagnostic tools, MRI provides essential information on the extent and surrounding anatomy of IMH.

• Archives of Plastic Surgery
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• v.42 no.1
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• pp.68-72
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• 2015

For recent years, use of autologous fat injection has increased significantly in facial contouring surgery. Along with such increase in use, complications like atypical mycoplasma infection have been also on the increasing trend. The authors report two cases of Mycobacterium chelonae infection that occurred after autologous fat injection. Patients were treated as infection that resistant to common antibiotics and results were negative to routine culture and Gram staining. Acid-fast bacillus stain, polymerase chain reaction (PCR) test and mycobacterial cultures were conducted for diagnosis under suspicion of atypical mycoplasma infection. Then, combination antibiotics therapy, surgical treatment, and steroid injection were performed for treatment. Both patients were diagnosed with Mycobacterium chelonae in PCR test. They were positive to mycobacterial cultures. Combination antibiotics therapy was repeated to improvement of symptom. However, they could not be free from side effects such as deformation in facial contour, scar and pigmentation even after full recovery. When chronic wound infections after autologous fat injection, we must suspect atypical or mycobacterial infection and conduct examinations for a early diagnosis and proper antibiotic therapy that is effective to the nontuberculous mycobacteria.

• Korean Journal of Head & Neck Oncology
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• v.13 no.2
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• pp.260-264
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• 1997

Metastatic cancer presenting as a cervical cyst is uncommon, and often misdiagnosed as branchial cleft cyst. Authors experienced two cases which presented clinically with features of branchial cleft cyst, but were subsequently found to be metastatic cancer. Radiologic examination and fine needle aspiration biopsy proved to be non-diagnostic, and pathologic findings after surgical excision showed metastatic cancer. Further evaluation and examination were made to find out the primary focus, which revealed tonsillar squamous cell cancer and thyroid papillary cancer in each case. When cervical cysts are noted in aged patients, it is mandatory to rule out metastatic cancer until it is proven otherwise. Surgical excision and pathologic diagnosis should be always accompanied to make correct diagnosis and further treatment.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.34 no.6
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• pp.480-483
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• 2012

Schwannoma is a benign, slow-growing, tumor of the peripheral nerves without specific symptoms, so that early diagnosis may be difficult. Though approximately 25~40% of all schwannomas occur extracranially in the head and neck region, only 1% of schwannomas are reported in the oral cavity. An 18-years-old female patient visited our clinic with a mass on the middle-right-dorsal surface of the tongue slowly growing for 1.5 years. The patient underwent the surgical removal of the neoplasia under general anesthesia. The mass was well capsulated and a cleavage plane was easily found. There was no recidivation during the course of a one-year follow-up. The treatment for schwannoma is surgical excision of the lesion and recurrence after excision of schwannoma is rare. The final diagnosis is made after a histological examination. Differential diagnoses must be made in relation to malignant tumors and in relation to numerous benign neoformations based on epithelial and connective tissues.

• Advances in pediatric surgery
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• v.6 no.1
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• pp.45-49
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• 2000

Henoch-Sch$\ddot{o}$nlein purpura is a systemic vasculitis of unknown etiology that is probably related to an autoimmune phenomenon. Henoch-Sch$\ddot{o}$nlein purpura is characterized by a purpuric rash, arthralgia, nephritis, and gastrointestinal manifestations. We reviewed 169 children hospitalized with a diagnosis of Henoch-Sch$\ddot{o}$nlein purpura between 1989 and 1998. One-hundred thirty-nine (82.2 %) had gastrointestinal findings including abdominal pain, nausea, vomiting and gastrointestinal bleeding. Surgical consultations were obtained for ten children, and laparotomy was performed in five. Three children suspected of having appendicitis underwent appendectomy. None had appendicitis. One child thought to have been intestinal strangulation was found to have hemorrhagic edema of the proximal jejunum and of the distal ileum. Another child underwent resection for an hemorrhagic infarct of the distal ileum. A high index of suspicion of this disease entity in the differential diagnosis of abdominal pain in children can avoid unnecessary laparotomy in most cases. However, life-threatening gastrointestinal complications may occur in low percentage of cases. Prompt recognition and adequate radiologic evaluation of the abdominal manifestation of this entity is necessary for early surgical intervention.

• Archives of Craniofacial Surgery
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• v.19 no.3
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• pp.231-234
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• 2018

A schwannoma is a benign tumor that develops from Schwann cells. It is known to occur more frequently in women than men, and about one third of schwannoma cases occur in the head and neck area. It is also known to originate mainly in the auditory nerve. However, it is rarely associated with the trigeminal nerve, and especially, schwannomas related to the infraorbital nerve are very rare. we report a rare case of a schwannoma involving the infraorbital branch of the trigeminal nerve in a 45-year old male adult. The patient underwent physical examination and magnetic resonance imaging. The mass was approached through subciliary approach that is familiar to the plastic surgeon and completely resected. Histopathological findings showed pointed to a benign schwannoma. Infraorbital nerve schwannoma is difficult to distinguish from other diseases by means of clinical symptoms, physical findings, or imaging. In spite of its rarity, infraorbital nerve schwannoma may be considered a possible diagnosis in the case of mass on cheek. Assessment by computed tomography or magnetic resonance imaging is necessary for proper diagnosis. About the surgical approach, excision through the subciliary approach should be considered rather than the direct transfacial approach in view of stability, cosmetic effects, and familiarity.

• Journal of Korean Neurosurgical Society
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• v.29 no.3
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• pp.411-419
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• 2000

Hematomyelia is an extremely rare condition that cause severe neurological symptoms. We reported 4 cases of spontaneous hematomyelia, two cases of cavernous angioma and two cases of hematoma. In all patients, the clinical course was progressive ; motor and sensory abnormalities below the lesion and voiding difficulties were the common presenting symptom complex. The preoperative diagnosis was made by magnetic resonance imaging and the all patients underwent surgical exploration. Complete removal of hematoma was done in 3 patients and complete evacuation after aspiration of hematoma were performed in one patients. Neurological function did not worsen postoperatively in any patients. The early diagnosis with magnetic resonance imaging and immediate surgical treatment of the hematoma and the associated vascular malformation are considered to be the best way to halt the progression of the disease.

• Annals of Surgical Treatment and Research
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• v.95 no.6
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• pp.340-344
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• 2018

Purpose: Traumatic lumbar hernia is rare, thus making diagnosis and proper treatment challenging. Accordingly, we aimed to investigate the clinical manifestations and proper management strategies of traumatic lumbar hernias. Methods: The medical records of patients with traumatic lumbar hernia treated at Gachon University Gil Hospital from March 2006 to February 2015, were retrospectively reviewed. Results: We included 5 men and 4 women (mean age, 55 years; range, 23-71 years). In 8 patients, most injuries were caused by motor vehicle collisions, including those wherein a pedestrian was struck (5 cases of car accidents, 2 falls, and 1 involving penetrating materials); in 1 patient, the probable cause was severe cough. Eight patients underwent hernia repair surgery (5 open and 3 laparoscopic), and a prosthetic mesh was used in 7 patients. Hernia repairs were elective in 7 patients; emergency hernia repair was performed with right hemicolectomy in 1 patient. No severe complication or recurrence was observed. Only 2 patients had mild complications, such as postoperative seroma. Conclusion: Traumatic lumbar hernia is a relatively rare injury of the posteriolateral abdominal wall. Lumbar hernia should be suspected in patients with high-energy injuries of the torso, and all such patients should undergo abdominopelvic computed tomography. After diagnosis, hernia repair can be electively performed without complications in most cases.