• 대한기관식도과학회지
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• 제6권1호
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• pp.113-117
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• 2000

A neurilemmoma of the facial nerve presenting as a parotid mass is a rare neoplasm and has been reported infrequently in the surgical literature. Diagnosis is usually by tissue biopsy intraoperatively and treatment is surgical with preservetion of facial function. This is a case of a solitary neurilemmoma involving the main trunk of the facial nerve in the posterior part of parotid gland continuing up to vertical segment of the facial nerve, in which the facial nerve had to be sacrificed and free autogenous nerve grafting was done.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제41권3호
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• pp.149-155
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• 2015

Surgical approaches to the condylar fracture include intraoral, preauricular, submandibular, and retromandibular approaches. Each approach has its own advantages and disadvantages. When a patient needs esthetic results and an intraoral approach is not feasible, the transmasseteric antero-parotid facelift approach is considered. This approach permits direct exposure and allow the surgeon to fixate the fractured unit tangentially. Tangential fixation is critical to osteosynthesis. Disadvantages of the transmasseteric antero-parotid facelift approach include damage to the facial nerve and a longer operation time. However, after the initial learning curve, facial nerve damage can be avoided and operation time may decrease. We report three cases of subcondylar fractures that were treated with a transmasseteric antero-parotid facelift approach. Among these, two cases had trivial complications that were easily overcome. Instead of dissecting through the parotid gland parenchyma, the transmasseteric antero-parotid facelift approach uses transmasseteric dissection and reduces facial nerve damage more than the retromandibular transparotid approach. The esthetic result is superior to that of other approaches.

• 대한두경부종양학회지
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• 제36권2호
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• pp.21-25
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• 2020

Sebaceous carcinoma is a relatively rare and aggressive malignant tumor. Periocular area (especially eyelid) is the most common lesion to occur, and the most common extraocular lesion is the parotid gland. Because the lesion also mimic other benign inflammatory diseases, this leads to delayed diagnosis or misdiagnosis. Here, we report a 58-year-old male patient who presented with a non-tender painless left parotid mass after wide excision of sebaceous carcinoma in the left eyelid two years ago. When he was diagnosed with sebaceous carcinoma of left eyelid, there was a small left parotid tumor on the computed tomography. But no further examination and treatment were performed. Two years later, physical examination revealed growing parotid tumor and multiple neck nodes on the left side. After radical parotidectomy and neck dissection, histological examination showed a sebaceous carcinoma and neck node metastasis. Considering the aggressiveness of sebaceous carcinoma, further evaluation for parotid glands should be considered when sebaceous carcinoma of the eyelid was discovered. Postoperative chemoradiotherapy was performed for disease control. Follow up after two years, and computed tomography showed no sign of recurrence.

• 대한두경부종양학회지
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• 제13권2호
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• pp.235-240
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• 1997

Parotid tumors constitute about 70 to 80% of all salivary tumors. Two thirds of parotid neoplasms are benign. Women are affected more often than men. Plemorphic adenoma or benign mixed tumor is the most common parotid neoplasm, accounting for 50% of all parotid tumors. The clinical presentation is a discrete, slowly enlarging mass, rarely accompanied by pain or facial paralysis. We reviewed 69 cases of the parotid tumors admitted and treated at Department of Surgery, Kosin University Hospital from Jan, 1970 to June, 1994. The results were as follows: 1) Over all sex ratio was 1 : 1.56(M : F). The sex ratio of benign and malignant tumor was 1 : 1.43(M : F) and 1 : 2.2. 2) The mean duration of symptom was 4.6 years. 3) In the peak incidence of age, Benign tumor was in 4th decade, malignant tumor was in 2nd decade. 4) The chief complaint was painless palpable mass in 65 cases(94%) and pain in 4 cases(6%). 5) The mean size of mass was 2.5cm in diameter and the ratio of lesion site was 37 : 32(Rt : Lt). 6) Superficial parotidectomy was the most common procedure(43%). 7) According to histopathologic findings of 69 cases, Benign tumor was 56 cases(81%) and malignant tumor was 13 cases (19%). In the benign cases, pleomorphic adenoma was the most common(44 cases(65%)). In the malignant, mucoepidermoid ca. was the most common(5 cases (37%)). 8) Postoperative complication occured in 9 cases(13%), facial palsy was in 7 cases, and wound hematoma was 2 cases.

• 대한세포병리학회지
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• 제7권2호
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• pp.225-229
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• 1996

We experienced a case of well-differentiated acinic cell carcinoma of the parotid gland in a 65 year-old woman, which was correctly diagnosed preoperatively by fine needle aspiration(FNA) cytology. FNA cytology smears showed clusters or sheets of monomorphic acinic cells having reticulated or finely vacuolated basophilic or acidophilic cytoplasm. The cellular population was homogeneous or slightly polymorphic, having centrally located, round nuclei with finely reticular chromatin and inconspicuous nucleoli. Herein we report this case with its histologic features and review of literatures.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제34권4호
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• pp.495-497
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• 2008

The salivary duct cyst is a rare disease and usually found in the parotid gland. A 55-years-old man presented swelling in the left buccal area and pathological diagnosis was a salivary duct cyst. Though its recurrence has been reported rare, the presented case showed recurrent swelling after enucleation. The recurrent lesion was successfully treated by incision and drain insertion.

• 대한방사선기술학회지:방사선기술과학
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• 제44권5호
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• pp.435-441
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• 2021

The purpose of this study was to evaluate the quality of images and to quantitatively measure and analyze the dose of scattered ray to the organs, which were highly sensitive to radiation according to the use of cylinder cone in mastoid process radiography. When the cylinder cone was not used, the SID was 100cm and the field size was 24 × 36 cm(864 cm²). When using the cylinder cone which was a circle, the SID was 70 cm, the radius was 10.5 cm and field size was 86.59 cm². As a result of the study, SNR of the image quality evaluation was measured to be 2.58 for Law method and 3.90 for Stenver's method when not using cylinder cone, and 2.87 for Law method and 14.67 for Stenver's method when using cylinder cone. CNR was measured to be 0.03 for Law method and 0.04 for Stenver's method when cylinder cone was not used, and 0.04 for Law method and 0.05 for Stenver's method when using cylinder cone. When the cylinder cone was not used, the scattered ray dose was measured to be 0.10 mGy in the right eyeball, 0.30 mGy in the left eyeball, 2.02 mGy in the parotid gland, and 0.29 mGy in the thyroid gland for Law method and to be 0.03 mGy in the right eyeball, 0.12 mGy in the left eyeball, 1.43 mGy in the parotid gland, and 0.09 mGy in the thyroid gland for Stenver's method. When the cylinder cone was used, the scattered ray dose was measured to be 0.05 mGy in the right eyeball, 0.03 mGy in the left eyeball and the parotid and thyroid gland were below the measurable values for Law method and all areas were below the measurable values for Stenver's method. This was found to be statistically significant(p<0.000).

• 대한방사선치료학회지
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• 제20권2호
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• pp.83-89
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• 2008

목 적: 두경부 암 환자 치료 시 표적 및 주변 장기(Target 및 Structure)를 확인하는 방법으로 MVCBCT, KVCBCT, CT On-rail System, Ultrasound 등이 이용된다. 이 중 MVCBCT의 경우는 뼈를 이용한 표적 및 주변 장기의 확인에는 유용하나, 연부조직으로 구성된 표적 및 주변 장기의 확인에는 어려움이 있다. 이에 본 연구에서는 CT On-rail System을 이용하여 두경부 암 환자의 이하선의 움직임에 대한 파악과 체적의 변화에 따른 선량의 변화를 연구해 보고자 한다. 대상 및 방법: 본원에서 두경부 암으로 치료받는 환자 5명을 대상으로 하였다. 선택된 환자는 시멘스사 ARTISTE CT Vision (CT On-rail System)을 이용하여 주당 3회씩 CT 스캔을 시행하였다. CT 스캔 후 이하선의 움직임을 치료 계획시의 영상과 비교하여 이동된 좌표를 얻었으며, 이하선의 체적을 확인하기 위하여 획득한 CT영상을 치료계획 시스템(RTP System)에 전송하여 변화된 체적에 따른 선량분포의 차이를 확인하였다. 결 과: 이하선의 움직임에 의한 표적 좌표의 변화는 X: -0.4~0.4 cm, Y: -0.4~0.3 cm, Z: -0.3~0.3 cm이었다. GTV의 체적은 평균 7.11%/week로 감소되었으며 이하선의 체적과 선량의 변화는 평균적으로 좌측 이하선의 체적은 평균 4.81%/week, 우측 이하선의 체적은 2.91%/week, 선량은 좌측 이하선의 선량은 3.66%/week, 우측 이하선 선량은 2.01%/week 감소하였다. 결 론: CT On-rail System에서 얻어진 영상을 이용하여 표적 및 주변 장기를 확인한 결과 MVCBCT를 이용한 영상에 비해 연부조직의 관찰에 우수함을 알 수 있었다. 또한, 획득한 영상으로 재 치료계획(Replanning)을 한 후 선량의 재분포를 획득한 결과 단순한 움직임의 보정뿐 아니라 체적의 변화를 고려한 정확한 선량분포를 얻을 수 있었으며, 이렇게 보정된 선량의 전달은 Adaptive Targeting Radiotherapy가 가능할 수 있다고 사료된다. 향후 선량의 전달까지 걸리는 시간을 단축할 수 있는 Real Time Adaptive Targeting Radiotherapy가 구축되어야 할 것으로 사료된다.

• Imaging Science in Dentistry
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• 제31권4호
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• pp.215-219
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• 2001

Purpose: The objective of this study was to estimate the radiation absorbed doses in certain critical organs in the head and neck region with 16 imaging programs available on the Orthopos/sup (R)/ panoramic machine. Materials and Methods: A Rando phantom and LiF TLD chips were used for dosimetry. The absorbed doses were measured at the thyroid gland, the submandibular gland, the parotid gland, the mouth floor. the maxillary sinus, the brain, the mandibular body, the mandibular ramus. the 2nd cervical spine and the skin over TMJ area. Results : The overall absorbed doses with imaging programs available on the Orthopos/sup (R)/ panoramic machine were much less than that of standard program (program 1) except program 8, 11, and 16. Generally, the absorbed doses to the bone marrow of the mandibular ramus and the parotid gland were high, but the absorbed doses to the bone marrow in the mandibular body, brain, maxillary sinus, and, especially, the thyroid gland were very low. Conclusion : The modified imaging programs available on the Orthopos/sup (R)/ panoramic machine can be effectively used in aspect of radiation protection.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제13권4호
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• pp.450-455
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• 1991

다형성 선종은 남성보다는 여성에게서 호발하고 발생연령은 40-60대의 중년에서 주로 발생하며 발생부위로는 소타액선의 경우 구개부와 상하순부에서 많이 발생하는 것으로 알려져 있다. 저자는 다형성 선종이 13세의 소아에서 그리고 협부에서 발생한 임상적으로 매우 드문 경우를 경험하였고, 외과적 절제술로 잘 치유되었으며, 소아의 협부에서 발생할 수 있는 여러 다른 종양과의 감별진단이 중요하리라 사료되어 이에 보고하는 바이다.