• Tuberculosis and Respiratory Diseases
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• v.62 no.4
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• pp.331-335
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• 2007

A thymoma commonly occurs in the superior mediastinum or the upper part of the anterior mediastinum but can be located in other places in rare cases. Cystic degeneration in a thymoma is a relatively common but focal event. In rare cases, the process proceeds to the extent that most if not all of the lesion becomes cystic. We report a case of a patient with a paracardial cystic thymoma in the lower aspect of the anterior mediastinum. A 49-year-old woman was referred to our hospital because of a mass discovered incidentally on a chest X-ray. She showed no symptoms or signs. Contrast-enhanced chest CT scan revealed a $5{\times}5cm$ sized, well-marginated, right paracardial cystic mass with a curvilinear and oval enhancing solid portion. A Surgical resection was performed. The mass was discontinuous with normal thymic tissue. Microscopy revealed a type B1 thymoma with prominent foci of medullary differentiation according to the WHO classification. There was no capsular or local invasion. The postoperative course was uneventful and the patient was discharged in good health.

• Journal of Embryo Transfer
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• v.21 no.1
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• pp.59-67
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• 2006

To evaluate the functional status of ovarian cyst in Korean native cows, progesterone ($P_4$) and estrogen ($E_2$) level of cystic follicular fluid, ultrasonography for measuring the cystic diameter and thickness of cystic wall, and histological findings were investigated in cystic ovaries from slaughtered Korean native cows. Ovarian cysts were classified as single follicular cyst 51 cows (59.3%), multiple follicular cysts 19 cows (22.1%), single luteal cyst 13 cows (15.1%) and multiple luteal cysts 3 cows (3.5 %) by anatomical and ultrasonography. Ovarian cysts were classified as follicular cysts (54 cows), luteal cyst (16 cows) and non-functional ovarian cyst (16 cows) by hormone analysis, anatomical finding and ultasonography The luteal cyst was accurately diagnosed by cystic wall thickness, but follicular cysts was misdiagnosed 16 cows of 70 cystic cows The cystic fluid $P_4$ concentration was 3.3 ng/ml in follicular cysts and 30.1 ng/ml luteal cysts. There was significantly positive correlations between cystic wall thickness and serum $P_4$ concentration in follicular ($r^2=0.59$, p<0.001) and luteal cysts ($r^2=0.65$, p<0.001). These results indicated that ovarian cysts had various stages of degeneration and luteal cyst was accurately diagnosed measurement of cystic wall thickness by ultrasonography, but follicular cysts were not diagnosed only cystic diameter and cystic wall thickness.

• Journal of Veterinary Clinics
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• v.21 no.2
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• pp.187-190
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• 2004

A mixed case of multiple sebaceous gland adenoma and perianal gland adenoma was found in a 11-year-old male Shih Tzu dog. Grossly, many masses less than 1 cm in diameter of back skin and single red-brown mass about 0.5 cm in diameter of inner ear were noted. In addition one of light-pink mass 5 cm in diameter was presented in the anus. All of the masses were well demarcated and dome-shaped or papillated nodules. Histologically, the mass from back and ear were composed with multiple irregular shaped or sized lobules of sebaceous glands. Masses were containing mostly mature sebaceous cells and multifocal cystic degeneration with acellular and bright eosinophilic materials. And the mass from peri-anal area was well-circumscribed and composed of broad, anastomosing trabeculae of well-differentiated hepatoid cells. There were very low mitotic figures in all masses. Based on these results, this case was diagnosed as the multiple sebaceous gland adenoma and perianal gland adenoma.

• Journal of Chest Surgery
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• v.11 no.3
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• pp.239-245
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• 1978

Recently, we experienced a case of rare neurilemmoma originated from intercostal nerve [9th] in the right chest wall in a 25 year old male officer. The tumor was incidentally found in the routine chest X ray, where the round well circumscribed mass tumor the ninth rib with notching and sclerotic margin, suggesting slowly growing benign benign of chest wall was revealed and the tumor mass was easily extirpated in the exploratory thoracotomy, with uneventful recovery. Grossly, the tumor was firm, partly soft and well circumscribed, measuring 4.5X3.0X 3.0 cm with yellowish smooth outer surface, attached with intercostal nerve trunk. Cut surface exhibits partly grayish white and largely hemorrhagic areas. Microscopically, the characteristic palisading arrangement of schwann cells and Verocay bodies are seen but dominant features are cystic degeneration and hemorrhage with organization and fibrosis. The sheath of intercostal nerve and capsule of neurilemmoma were con joined. There is no evidence of malignancy. The tumor was confirmed as neurilemmoma of intercostal nerve, Antony type B.

• Journal of Chest Surgery
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• v.14 no.3
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• pp.291-296
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• 1981

Dissecting aortic aneurysm is a disease which is characterized by hemorrhagic intramural seperation of aortic wall and extension for varlng distances proximally, distally, or both from the site of the intimal tear. Most aortas show some type of medial degeneration most commonly described as cystic medial necrosis. DeBackey classified this disease according to involved aorta and site of intimal tear to 3 basic types, such as type I, II and III. Type III is defined that dissecting process arrises in the descending thoracic aorta just distal to origin of the left subclavian artery and extends distally for a varing distance. We expirienced a case of dissecting aneurysm, type III of DeBackey's classification which dissecting process is limited to the descending thoracic aorta in the Department of Thoracic and Cardiovascular Surgery, Kyungpook National University Hospital. This patient was 40 year old woman and she had suffered from intermittent sharp back pain for 3 years .before admission. Excision of the aneurysm and Dacron graft were placed successfully under the left atrio-femoral bypass with artificial pump. The hospital course was uneventful.

• Journal of Chest Surgery
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• v.19 no.1
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• pp.134-139
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• 1986

Seventeen patients underwent operations for aneurysm of ascending aorta with aortic regurgitation from August 1979 to October 1985. 10 patients underwent complete replacement of the ascending aorta and the aortic valve with a composite graft and implantation of coronary ostia on the graft. Seven patients underwent supracoronary noncomposite graft replacement and aortic valve replacement. The patients ranged in age from 25 to 55 years [mean 37.6 years]. There were 11 male and 6 female patients. All patients had aortic incompetence and aneurysmal dilatation of the ascending aorta. Seven of the patients has concomitant aortic dissection in ascending aorta and one had dissection in abdominal aorta. Eight patients had signs of Marfan syndrome and the other 3 patients had cystic degeneration in the medial layer of the aorta. There was one hospital death[5.8%]. He died of sepsis on the 23rd postoperative day. All survivors showed improvement in NYHA functional classification in the 34.9 patient-year follow-up period.

• Imaging Science in Dentistry
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• v.53 no.3
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• pp.239-245
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• 2023

Schwannomas are uncommon neoplasms of neurologic origin that are rare in the salivary glands. A schwannoma that persists for a long time is referred to as an ancient schwannoma if it is accompanied by degenerative changes on histology. The case described herein involved a 37-year-old man with an ancient schwannoma that had persisted for 20 years in his right parotid gland. Clinically, the lesion presented with swelling and pain. Computed tomography revealed a well-defined, multilocular enhanced lesion. T2-weighted magnetic resonance images displayed multilocular hyperintensity, while T1-weighted images showed a high signal at the lobulated margin and a homogeneous low signal internally. The preoperative diagnosis, based on the lesion's location and imaging diagnosis, was Warthin's tumor. However, a biopsy conducted after surgical excision identified the lesion as a schwannoma with cystic degeneration. This report also presents a summary of the characteristics of rare cases of schwannoma in the major salivary gland based on this case and a literature review.

• The Journal of the Korean bone and joint tumor society
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• v.13 no.1
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• pp.22-30
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• 2007

Purpose: We describe clinical, radiographic, MRI and pathologic findings as well as final outcome after simple curettage and bone graft of cystic fibrous dysplasia (FD) in the long bone, which has been rarely documented in the literature. Materials and Methods: Clinical records, radiographs, MRI and histologic slides of 11 patients with cystic FD in the long bone were retrospectively analyzed. Results: Six patients complained pain for several months, 4 patients presented pain after trivial injury event, and 1 patient suffered pathologic fracture. The mode of involvement was monostotic in 10 patients and polyostotic in l patient. The femur was affected in 7 patients, the humerus in 3, and the radius in 1. Radiography showed prominent, expansive lysis associated with ground-glass density of FD. MRI revealed 2 different signals of FD and cyst. Microscopic examination revealed classic findings of FD and non-specific cystic degeneration. The final outcome was satisfactory in every patient. Local recurrence was not observed. Conclusion: Cystic FD in the long bone seems not as rare as the scarcity of reported cases would indicate. MRI features provide a basis for differential diagnosis between benign cystic change and malignant transformation. Cystic FD would be an indication for surgery and simple curettage with allo-chip-bone graft is effective.

• The Korean Journal of Nuclear Medicine
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• v.17 no.1
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• pp.17-23
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• 1983

In an attempt to evaluate the diagnostic singnificance of the serum thyroglobulin (TG) in various thyroid disease states, authors measured serum TG by radioimmunoassay technique in 20 cases of normal subject, 22 cases of hyperthyroidism, 12 cases of diffuse nontoxic goiter (DNG) and 96 cases of nodular nontoxic goiter(NNG). The results were as follows: 1. In 20 cases of normal subjects, serum TG level was $20.41{\pm}5.5ng/ml(M{\pm}S.D.)$. There was no significant difference between males ans females. 2. In 22 cases of hyperthyroidism, serum TG level was $60.23{\pm}34.56ng/ml$ and the range was from 22 to 175 ng/ml, which were significantly high levels comparing with normal controls (p<0.01). 3. In 12 cases of euthyroidism with DNG, serum TG was $37.28{\pm}27.36ng/ml$ and the range was from 14 to 89 ng/ml. In 96 cases of euthyroidism with NNG, serum TG was $70.43{\pm}78.18ng/ml$ and the range was from 12.8 to 440 ng/ml. Both groups showed significantly increased levels of TG than normal control (p<0.01). 4. 57 cases of NNG patients were analysed pathologically by operation or needle biopsy and the TG level of each disease group is as follows. Thyroid carcinoma (16 cases); $72.2{\pm}81.71ng/ml$, adenomatous goiter without cystic degeneration (15 cases); $74.86{\pm}45.64ng/ml(M{\pm}S.D.)$ and adenomatous goiter with cystic degeneration(23 cases); $73.56{\pm}64.78ng/ml(M{\pm}S.D.)$. There was no significant difference between each group. Also the TG levels of thyroiditis (5 cases) was $19.6{\pm}8.96ng/ml(M{\pm}S.D.)$. 5. There were no significant correlations between serum thyroid hormones and serum TG in each thyroid functional states.

• Korean Journal of Veterinary Research
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• v.34 no.4
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• pp.787-799
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• 1994

To elucidate morphologic lesion of porcine exudative epidermitis which is occurred sporadically in Korea, Staphylococcus hyicus subsp. hyicus isolated from the naturally affected pigs was inoculated to suckling pigs. The infected piglets were observed grossly and histopathologically. Although affected piglets were taking acute, subacute, or chronic course, some piglets suffered from chronic disease showed poor prognosis and marked growth depression. Affected peglets had erythematous skin on the face, ear, and abdomen and these localized lesions appear as brownish spots of exudative epidermitis and fromed crust in the early stage. But, after this stage, the skin were covered by viscous greasy exudate and formed blackish brown crust and appeared fissures and hypertrophy. Grossly, there has been hemorrhage with the removal of crust-like materials of epidermis and edematous subcutis. The superficial lymph nodes were edematous and swollen or congested and hemorrhagic. Some piglets had swollen ureters, cysts in the renal cortex, or polyarthritis. A few cases had mild edematous swelling of kidney, intestinal catarrh and congestion of brain. Microscopically, skin lesions had detachment of keralinized layer and parakeratosis of epidermis, hydropic degeneration of epidermal cell, and retrogressive degeneration of hair root sheath. Dermis had edema, and infiltration of neutrophils and mononuclear cells. As the disease was proceeded, there was marked perivasculitis with lots of mononuclear inflammatory cells. More chronic lesions formed granuloma-like bodies(nodules) due to more mononuclear, perivascular inflammatory cell infiltration and proliferation of fibroblast. Lots of plasma cells and eosinophils were also present in dermis. Epidermis was hyperplastic by proliferation of basal cells stratum germinativum and epidermal pegs often extended into the dermis. In secondary infection, lots of neutrophils could be seen in epidermis and derms. Kidney had neutrophilic infiltration, necrotic and cystic glomeruli, and dilation of renal tubules and ureters. Purulent arthritis was sometimes observed in joints. Three days old mice administrated Staphylococcus hyicus subsp hyicus subcutaneously before had focal congestion and hemorrhage, necrosis, and subcutaneous edema of the skin. This observation was also seen in the study of mice administrated exfoliatin toxin of Staphylococcus which evoked human staphylococcal scalded skin syndrome.