• Journal of Chest Surgery
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• 제56권2호
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• pp.143-146
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• 2023

Thymomas are common anterior mediastinal tumors with a relatively favorable prognosis compared to that of other types of thoracic malignancies. However, thymomas that invade surrounding structures, such as the heart or vena cava, have been infrequently reported, and intracardiac thymomas are exceedingly rare. Treatment of invasive thymoma is difficult because the high rate of incomplete resection results in a high rate of recurrence. Herein, we present a rare case of a thymoma that originated in the right atrium and extended into the superior vena cava and brachiocephalic vein.

• Tuberculosis and Respiratory Diseases
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• 제66권2호
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• pp.127-131
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• 2009

기형종은 주로 전 종격동에서 발생하는 양성 종양으로 대부분 무증상이며 검사에서 우연히 발견된다. 드물게 기형종이 파열하여 여러 합병증을 일으키는 것으로 알려져 있으며 합병증은 급성 증상을 동반한다. 저자들은 급성 증상없이 만성적인 경과를 보인 기형종 파열 1예를 경험 하였다. 환자는 왼쪽 폐에 다량의 흉수가 있었는데 배액관 삽입으로 증상이 호전되었으며 지속적으로 흉수의 carcinoembryonic antigen (CEA) 및 carbohydrate antigen 19-9 (CA19-9)이 증가되어서 악성 흉수를 동반하는 종양과 구별이 어려웠다. 본 증례는 이차 감염에 의한 농흉을 치료하기 위해 흉강경으로 확인하기 전까지는 확진이 어려웠고, 매우 높은 흉수 내 악성 종양 표지자 수치를 보인 증례가 국내에는 보고되지 않았으므로 유사 증례의 문헌 고찰과 함께 보고한다.

• Journal of Chest Surgery
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• 제30권1호
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• pp.55-60
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• 1997

본 인제대학교 의과대학 서을 백병원 흉부외과학교실에서는 1987년 9월 부터 1995년 12월까지 원발성 종격동 종양의 진단하에 수술을 시행한 40례를 대상으로 하여 임상적 고찰을 하였다. 관찰 대상은 남자 18례와 여자 22례로 연령은 Vll에서 68세까지 였으며 평균 )4.1세였다. 종양의 진단시 증상은 흉통(12.5%), 기침(12.5%), 호흡곤란(7.5%) 경부종괴(7.5%), 흉부불쾌감(5.0%) 등이었다. 진단은 모든 예에서 단순 흉부엑스선 사진과 흉부 전산화단층촬영을 실시하였고 5례 에서는 자기공명영상을 시행하였다. 경피적 침생검은 22례에서 시행하여 16례에서 조직학적 진단을 얻었다(민감도 72.7%). 종양의 위치별 분포는 전상부 종격동 24례(60.0%), 후부 종격동 14례(35.0%), 중부 종격동 2례(5.0%)였다. 종양의 종류는 흉선종 11례(27.5%), 신경성종양 10례(25.0%), 배아세포종 7례(17.5%), 낭종 8례(20.0%), 거대 림프 절비대(Castleman's disease) 2례(5.0%), 방추세포육종 1례(2.5%) 그리고 림프종 1례(2.5%), 였다. 악성 종양은 5례로 침습성 흉선종 3례, 방추세포육종 1례, 림프종 1례였다. 치료는 양성의 모든 예와 악성종양 3례에서 완전절제하였고, 2례는 수술이 불가능하였다. 수술후 사망은 없었고 합병증은 창상피열, 성대마비, 어깨강직이 각각 1례씩 있었다.

• Korean Journal of Radiology
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• 제2권3호
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• pp.138-144
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• 2001

Objective: Bronchogenic carcinoma can mimic or be masked by pulmonary tuberculosis (TB), and the aim of this study was to describe the radiologic findings and clinical significance of bronchogenic carcinoma and pulmonary TB which coexist in the same lobe. Materials and Methods: The findings of 51 patients (48 males and three females, aged 48-79 years) in whom pulmonary TB and bronchogenic carcinoma coexisted in the same lobe were analyzed. The morphologic characteristics of a tumor, such as its diameter and margin, the presence of calcification or cavitation, and mediastinal lymphadenopathy, as seen at CT, were retrospectively assessed, and the clinical stage of the lung cancer was also determined. Using the serial chest radiographs available for 21 patients, the possible causes of delay in the diagnosis of lung cancer were analyzed. Results: Lung cancers with coexisting pulmonary TB were located predominantly in the upper lobes (82.4%). The mean diameter of the mass was 5.3 cm, and most tumors (n=42, 82.4%) had a lobulated border. Calcification within the tumor was seen in 20 patients (39.2%), and cavitation in five (9.8%). Forty-two (82.4%) had mediastinal lymphadenopathy, and more than half the tumors (60.8%) were at an advanced stage [IIIB (n=11) or IV (n=20)]. The average delay in diagnosing lung cancer was 11.7 (range, 1-24) months, and the causes of this were failure to observe new nodules masked by coexisting stable TB lesions (n=8), misinterpretation of new lesions as aggravation of TB (n=5), misinterpretation of lung cancer as tuberculoma at initial radiography (n=4), masking of the nodule by an active TB lesion (n=3), and subtleness of the lesion (n=1). Conclusion: Most cancers concurrent with TB are large, lobulated masses with mediastinal lymphadenopathy, indicating that the morphologic characteristics of lung cancer with coexisting pulmonary TB are similar to those of lung cancer without TB. The diagnosis of lung cancer is delayed mainly because of masking by a tuberculous lesion, and this suggests that in patients in whom a predominant or growing nodule is present and who show little improvement of symptoms despite antituberculous or other medical therapy, coexisting cancer should be suspected.

• Korean Journal of Radiology
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• 제20권4호
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• pp.671-682
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• 2019

Objective: To investigate whether computed tomography (CT) and fluorine-18-labeled fluoro-2-deoxy-D-glucose (FDG) positron emission tomography (PET) may be applied to distinguish thymic epithelial tumors (TETs) from benign cysts in the anterior mediastinum. Materials and Methods: We included 262 consecutive patients with pathologically proven TETs and benign cysts 5 cm or smaller who underwent preoperative CT scans. In addition to conventional morphological and ancillary CT findings, the relationship between the lesion and the adjacent mediastinal pleura was evaluated qualitatively and quantitatively. Mean lesion attenuation was measured on CT images. The maximum standardized uptake value (SUVmax) was obtained with FDG-PET scans in 40 patients. CT predictors for TETs were identified with multivariate logistic regression analysis. For validation, we assessed the diagnostic accuracy and inter-observer agreement between four radiologists in a size-matched set of 24 cysts and 24 TETs using a receiver operating characteristic curve before and after being informed of the study findings. Results: The multivariate analysis showed that post-contrast attenuation of 60 Hounsfield unit or higher (odds ratio [OR], 12.734; 95% confidence interval [CI], 2.506-64.705; p = 0.002) and the presence of protrusion from the mediastinal pleura (OR, 9.855; 95% CI, 1.749-55.535; p = 0.009) were the strongest CT predictors for TETs. SUVmax was significantly higher in TETs than in cysts (5.3 ± 2.4 vs. 1.1 ± 0.3; p < 0.001). After being informed of the study findings, the readers' area under the curve improved from 0.872-0.955 to 0.949-0.999 (p = 0.066-0.149). Inter-observer kappa values for protrusion were 0.630-0.941. Conclusion: Post-contrast CT attenuation, protrusion from the mediastinal pleura, and SUVmax were useful imaging features for distinguishing TETs from cysts in the anterior mediastinum.

• Journal of Chest Surgery
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• 제42권3호
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• pp.355-360
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• 2009

배경: 양성 기형종은 대부분은 무증상이지만 적은 빈도에서 늑막, 심외막, 폐실질, 기관지 내로 파열 되어 심한 증상 유발과 함께 치료가 어려워 술 전 파열여부에 대한 정확한 진단이 수술적 치료에 있어서 중요하다. 따라서, 이 연구에서는 파열된 양성 기형종의 임상적 증상, 영상학적 소견과 수술적 소견에 대해서 알아보고 파열되지 않은 기형종과의 차이를 알아 보고자 하였다. 대상 및 방법: 24명의 완전 절제된 양성 기형종의 환자를 후향적으로 조사하였다. 수술 전 임상 증상, 흉부 CT 소견, 수술 소견과 수술 성적의 차이를 파열된 군과 파열되지 않은 두 군에서 비교하였다. 특히 흉부 CT 소견에서는 종괴 크기, 피막 두께, 종괴의 위치, 분엽 정도, 균일성, 종괴 내용물, 주위 장기와의 관계 등을 조사하였다. 결과: 총 24명의 환자에서 수술 소견 결과, 7명의 환자(29.2%)가 파열된 양성 기형종으로 진단되었다. 15명(62.5%)의 환자에서 술 전 흉통, 기침 등의 증상이 있었으며 파열된 양성 기형종에서 증상이 심하고 빈도가 높았으나 통계적으로 차이는 없었다(p=0.37). 흉부 CT 소견에서는 두 군간에 종괴의 크기, 피막 두께, 종괴의 위치, 분엽정도, 균일성에는 차이가 없었다. 하지만 석회화 정도와(p=0.04), 종괴 주변 소견으로 폐경화, 폐허탈의 빈도가 파열 양성 기형종에서 통계적으로 유의하게 높았다(p=0.03). 파열된 양성 기형 종에서 수술적 접근은 모두 흉골 절개 또는 개흉술을 통해서 이루어 졌으며 동반된 폐절제 건수도 많았다. 결론: 술 전 흉부 CT는 파열된 기형종을 정확하게 진단할 수 있었고, 종괴 내에 석회화가 존재하거나 폐병변이 동반된 경우 파열된 기형종의 확률이 높았다. 따라서, 술 전 임상 소견 및 흉부 CT 소견에 의한 정확한 진단은 적절한 수술적 시기를 정하거나 접근 방법을 정하는 데에도 중요한 역할을 할 것으로 생각된다.

• Tuberculosis and Respiratory Diseases
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• 제79권2호
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• pp.101-103
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• 2016

Nocardia species are aerobic, gram-positive pathogens found worldwide in soil. Nocardia is considered an opportunistic pathogen, and its infection mostly occurs in immunocompromised patients. We report a case of Nocardia farcinica induced mediastinitis and pneumonia that occurred in a 64-year-old male patient who had no significant medical history except for hypertension. He visited another hospital with a complaint of dyspnea and left chest wall pain. The symptoms arose 7 days ago without any trauma and they worsened. A mediastinal mass was found on computed tomography scan. After being transferred to our hospital for further evaluation, he was diagnosed with mediastinitis and pneumonia. As N. farcinica was found to be the causative organism by 16S rRNA sequencing, proper antibiotic therapy including trimethoprim/sulfamethoxazole was initiated immediately. After this, the patient improved and he was discharged. If an infection has a disseminating course, nocardiosis cannot be excluded even in immunocompetent patients. Once the diagnosis is established, prompt antibiotic therapy should be performed based on the severity.

• 대한세포병리학회지
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• 제8권1호
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• pp.93-97
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• 1997

A case of cervical chordoma diagnosed by fine needle aspiration is discussed. A 41year-old male was admitted due to dyspnea on neck flexion. Radiologic image revealed a retrotracheal superior mediastinal solid mass. Aspiration cytology showed many clusters of oval or large polygonal cells having abundant eosinophilic or bubbly cytoplasm in an amorphous blue-gray mucoid background. The nuclei were round and showed size variation, coarse granular chromatin, and indistinct nucleoli. Some cells contained brown granular pigments in the cytoplasm. Mitoses were rarely found. The cytoplasm was strongly positive for PAS stain. Immunohistochemical stains using cell block revealed positive reaction for cytokerain, EMA, vimentin, and S-100 protein. The confirmative diagnosis was made by following excisional biopsy. Electron microscopic study revealed large pools of intracytoplasmic glycogen and microfilaments. This is the first case of cervical chordoma diagnosed by aspiration cytology to our knowledge in Korean literature.

• Journal of Korean Neurosurgical Society
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• 제48권2호
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• pp.181-184
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• 2010

A case of idiopathic hypertrophic cranial pachymeningitis (IHCP) misdiagnosed as an acute subdural hematoma is reported. A 37-year-old male patient presented with headache following head trauma 2 weeks earlier. Computerized tomography showed a diffuse high-density lesion along the left tentorium and falx cerebri. Initial chest X-rays revealed a small mass in the right upper lobe with right lower pleural thickening, which suggested lung cancer, such as an adenoma or mediastinal metastasis. During conservative treatment under the diagnosis of a subdural hematoma, left cranial nerve palsies were developed (3rd and 6th), followed by scleritis and uveitis involving both eyes. Magnetic resonance imaging (MRI) revealed an unusual tentorium-falx enhancement on gadolinium-enhanced T1-weighted images. Non-specific chronic inflammation of the pachymeninges was noticed on histopathologic examination following an open biopsy. Systemic steroid treatment was initiated, resulting in dramatic improvement of symptoms. A follow-up brain MRI showed total resolution of the lesion 2 months after steroid treatment. IHCP should be included in the differential diagnosis of subtentorial-enhancing lesions.

• Clinical and Experimental Pediatrics
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• 제57권11호
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• pp.500-504
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• 2014

Kaposiform hemangioendothelioma (KHE) is a rare, locally aggressive vascular tumor of intermediate malignancy with resemblance to Kaposi sarcoma. It occurs predominantly in pediatric age groups as a cutaneous lesion with focal infiltration into the adjacent soft tissue and bone. Although visceral involvement is very uncommon, several cases with bone, retroperitoneal, or mediastinal involvement have been described. KHE has been reported to occasionally occur in unusual sites such as the thymus, tonsils, larynx, paranasal sinuses, deltoid muscle, spleen, uterine cervix, thoracic spine, and even the breast. Multifocal KHE is an extremely rare entity with few reports available in the literature, none of which describes pulmonary involvement. Herein, we report a unique case of multifocal KHE in a 13-year-old boy presenting with a huge soft tissue mass in the upper extremity complicated by bilateral pulmonary nodules that developed into large, necrotic tumor masses.