• 대한두경부종양학회지
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• 제33권1호
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• pp.85-89
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• 2017

A 62-year-old female patient had goiter for twenty years. She visited out-patient clinic with a hoarse voice and intermittent breathing difficulties. About protruding 15cm sized mass located the anterior neck and right vocal cord paralysis was observed. Preoperative CT scan was strongly suspected of thyroid gland cancer and cervical lymph node metastasis. Therefore, fine needle aspiration test was performed and surgical treatment was planned with the histopathologic results (papillary thyroid carcinoma). Surgery was performed with total thyroidectomy, bilateral cervical lymph node dissection, and right selective nodal lymph node dissection (level II-V). During operation right thyroid seemed to be adherent to surrounding tissue and the blood vessels were extremely engorged. There was hypotensive crisis because of intraoperative excessive bleeding. However it was managed by repetitive transfusion. The operation was completed without abnormalities. She underwent 4 times of bleeding control operation due to postoperative bleeding. After complications were improved, we are currently undergoing out-patient follow up without morbidity.

• 대한두경부종양학회지
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• 제13권2호
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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.

• 대한두경부종양학회지
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• 제30권2호
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• pp.119-122
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• 2014

Rhabdomyosarcoma is the most common sarcoma in children less than 15 years of age. Two major histological subtypes are embryonal and alveolar. Embryonal rhabdomyosarcoma is diagnosed by immunopathology and treatments require coordinated management plans that include surgery, chemotherapy, and usually radiotherapy. 8-month-old male infant visited with swelling in left parotid area. Computed tomography scan showed a heterogeneous mass in the left parotid area and the result of fine-needle aspiration cytology was suspicious malignancy. Left total parotidectomy was performed and CSF leakage was noted and repaired. Confirmed by positive reactions to desmin and myogenin, the diagnosis was embryonal rhabdomyosarcoma. On postoperative brain MRI, extension along the meninges was noted and for treatment, chemotherapy and gamma knife radiosurgery were done. Five years after initial surgical resection(3 years and 10 months after completion of chemotherapy and gamma knife radiosurgery), the child did not show any evidence of local recurrence or distant metastasis.

• 대한세포병리학회지
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• 제5권2호
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• pp.189-193
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• 1994

Malignant thymoma is usually manifested as a mediastinal mass. Occasiomally, these tumors may be associated with a variety of systemic syndromes, such as myasthenia gravis, pure red cell aplasia or hypogammaglobulinemia However, it is generally accepted that thymomas rarely metastasize and the frequency of extrathoracic metastasis has been reported as 1 to 15%. In general, nuclear changes of tumor cells such as enlarged size, irregular shape and altered textures are determining factors in the assessment of the grade of malignancy. We experienced a case of malignant thymoma of anterior mediastinum in a 35-year-old woman. After 3 years, she developed recurrent malignant thymoma in the right supraclavicular area, diagnosed by aspiration biopsy cytology.

• 대한두경부종양학회지
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• 제4권1호
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• pp.53-58
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• 1988

We have experienced 3 cases of papillary carcinoma of the thyroid gland seen as lateral neck cyst, Usually cystic lesions of the neck have been considered as benign lesions from clinical viewpoint. The usual differential diagnosis includes branchial cleft cyst, cystic hygroma, dermoid cyst, cold abscess(tuberculous lymphadenitis) and cavitating squamous cell carcinoma. A lateral neck cyst as the sole presenting complaint of the papillary thyroid carcinoma is very rare. Preoperative diagnosis of lateral neck cyst is often diagnostic dilemma. Fine-needle aspiration cytology can be helpful in detecting the cancer cells and in demonstrating the nature of the fluid component of the lateral neck cyst. Presence of brown murky fluid from the aspirated fluid is highly suggestive of thyroid carcinoma. The thyroid scans and B-mode ultrasonography mayor may not be helpful to detect the primary focus of the thyroid gland. We suggest that a patient with a lateral neck cyst in adult age group should be considered to be a possibility of underlying thyroid carcinoma presanting as lateral neck cyst.

• 열처리공학회지
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• 제5권2호
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• pp.85-94
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• 1992

Microstructural evolution of wrought Inconel 718 superalloy with different heat treatment conditions was studied. Heat treatment was performed via conventional(CHT), modified(MHT), Merrick(MeHT) and modified Merrick (MMeHT) methods. The size of ${\gamma}^{\prime}$ and ${\gamma}^{\prime\prime}$ precipitates which are principal strengthening phases in Inconel 718 superalloy increase in order of CHT, MHT, MeHT. For the case of MMeHT, a coexistence of fine ${\gamma}^{\prime\prime}$ precipitate and very coarse particles due to exess growth of ${\gamma}^{\prime\prime}$, which is called bimodal distribution, was observed. CHT gave the finest grain size. (Ti, Nb)C carbide and needle-like ${\delta}$ phase were formed together at grain boundaries for CHT, and were formed both inside and at boundaries of grains for MHT, MeHT and MMeHT. Morphology of partially serrated grain boundaries was developed in all heat treatment conditions except CHT.

• 한국임상수의학회지
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• 제27권4호
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• pp.483-487
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• 2010

A 7-year-old female maltese dog with anorexia and vomiting for a week, and left axillary and perineal mass was admitted to Gyeongsang National University Veterinary Teaching Hospital. CBC revealed mild leukocytosis and severe anemia. Abdominal radiography revealed multiple gas opacities in upper abdomen. On ultrasonography, large amount of echogenic free abdominal fluid were detected. In addition, There are enhanced peritoneal strip sign (EPSS) indicating peumoperitoneum in the upper abdomen. Fine needle aspiration of the mass was performed and the result was mast cell tumor. Duodenal perforation caused by mast cell tumor was identified on laparotomy.

• 한국임상수의학회지
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• 제22권3호
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• pp.275-277
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• 2005

A six year old female Shih Tzu was euthanized after having about 2 months history of weakness and convulsion with hypoglycemia. On ultrasonography, several masses in variable sizes were noted in the liver and fine needle aspiration cytology revealed probable neoplasm of pancreatic origin. On necropsy, numerous round firm tan nodules with central depression were noted in the liver and heart. Mesenteric lymph node was enlarged and fused with presumable pancreatic tissue. Based on the histopathology and immunohistochemistry, the tumor was confirmed as malignant metastatic insulinoma.

• 한국임상수의학회지
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• 제22권2호
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• pp.166-169
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• 2005

A 10 year-old castrated male Maltese dog with a mass on the right carpal joint was referred to the Chungnam National University Veterinary Medical Teaching Hospital. Mass size was 0.5 cm in width, 0.8 cm in length and 0.8 cm in height. Surface of the mass was hairless and ulcerated, and also the peripheral furs of mass were discolored by continuous licking. This case was diagnosed as basal cell tumor by fine needle aspiration and histopathologic examination. This dog didn't lick the carpal joint after surgery.

• 한국임상수의학회지
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• 제25권1호
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• pp.44-47
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• 2008

An unknown-aged intact male Yorkshire terrier dog with a mass on the right caudoabdominal region was referred to the Veterinary Medical Teaching Hospital at Chungnam National University. Mass size was 4.5 cm in width, 6 cm in length and 3.5 cm in height. This case was suspected to seminoma by physical examination, laboratory examination, radiography, ultrasonography, CT and fine needle aspiration. This dog followed by treatment with surgical excision. After surgery, this case was diagnosed as seminoma by histopathological examination.