• Journal of the Korean Society of Radiology
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• v.84 no.6
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• pp.1384-1390
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• 2023

Primary masses rarely originate from the heart and great vessels, and a malignant peripheral nerve sheath tumor (MPNST) is extremely rare. A 76-year-old male with pleural effusion underwent contrast-enhanced computed tomography, which revealed a hypoattenuating mass involving the right pulmonary vein and left atrium. Ultrasonography showed that the mass originated from the right pulmonary vein. Surgical resection confirmed an MPNST that originated from the pulmonary vein. We report the first Korean case of a primary MPNST originating from the pulmonary vein. We have also described the radiologic findings suggestive of a pulmonary vein mass.

• The Korean Journal of Cytopathology
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• v.11 no.1
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• pp.31-34
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• 2000

Pulmonary hamartoma is an uncommon benign tumor consisting of a mixture of loose fibromyxoid tissue, cartilage, fat, and cleft-like spaces lined by cuboidal or ciliated epithelium. Cytologically, the presence of a mesenchymal component is essential for the diagnosis of pulmonary hamartoma. We report the fine needle aspiration cytologic findings of two cases of pulmonary hamartoma. Case 1 was a 71-year-old woman with a mass, measuring $1.8{\times}1.5cm$ in the upper lobe of the right lung. Case 2 was a 51-year-old woman with a mass, measuring $2.3{\times}2.0cm$ in the lower lobe of the right lung. Fine needle aspiration cytology of both pulmonary masses revealed several sheets of loose fibromyxoid tissue fragments with focal cartilaginous differentiation and a few clusters of bland cuboidal epithelial cells on the bloody background. The diagnosis was histologically confirmed by needle biopsy.

• Tuberculosis and Respiratory Diseases
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• v.49 no.1
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• pp.117-121
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• 2000

The mucormycosis is a group of serious opportunistic infections caused by fungi of the class Zygomycetes and order Mucorales. Pulmonary mucormycosis is a relatively rare disease but typically manifested by a rapidly progressive, often fatal pneumonia in patients with diabetes mellitus, hematologic malignant neoplasms, or organ transplants. The radiologic manifestations of pulmonary mucormycosis are nonspecific and include progressive lobar or multilobar consolidations, pulmonary masses and pulmonary nodules. Recently, we experienced a pulmonary mucormycosis in 32-year-old man with uncontrolled diabetes. He complained of cough, left pleuritic chest pain and generalized weakness. Initial chest X-ray finding was the consolidation on the lower lobe of the left lung. On the sixth hospital day, bronchoscopic examination with lung biopsy revealed broad, non-septate hyphae with right-angle branching, diagnostic of mucormycosis, and consequently amphotericin B therapy was started. We performed a lobectomy of the left lower lobe of the lung on 29th hospital day.

• Korean Journal of Veterinary Research
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• v.61 no.3
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• pp.24.1-24.5
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• 2021

A 4-year-old Holstein cow with progressive atrophy and ataxia was submitted for diagnosis. The postmortem examination revealed multifocal yellowish nodules in the pulmonary parenchyma and vegetative masses in the mitral and tricuspid valve of the heart. Both kidneys were severely enlarged, with multiple yellow nodules on the parenchyma. Histopathologically, pulmonary abscesses, vegetative endocarditis, suppurative glomerulonephritis, and fibrino-purulent arthritis were observed. The tiny β-hemolytic bacterial colonies were isolated from the lesions and identified as Arcanobacterium haemolyticum by the VITEK 2 system (bioMérieux, USA). This is the first documented report of an A. haemolyticum infection in a Holstein cow in Korea.

• Journal of Chest Surgery
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• v.42 no.3
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• pp.364-367
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• 2009

Retroperitoneal pulmonary sequestration is an extremely rare congenital malformation. It is more frequently diagnosed in the antenatal period due to routine ultrasonic examinations that are conducted for a fetus or during the first 6 months of life, although retroperitoneal pulmonary sequestration is incidentally discovered in adults on rare occasions. Because the location and radiological findings of retroperitoneal pulmonary sequestration are very similar to those of another retroperitoneal masses, retroperitoneal pulmonary sequestration, although they are very rare, should be included in the differential diagnosis of a retroperitoneal suprarenal mass. Although fine needle aspiration may be considered as an aid for making the preoperative diagnosis, surgery remains the treatment of choice for symptomatic lesions and this surgery is associated with excellent results and a good prognosis.

• Clinical Pain
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• v.18 no.2
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• pp.102-106
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• 2019

Tuberculosis in the foot progresses gradually; thus, diagnosis is usually delayed, and early treatment is rarely provided. If osteomyelitis occurs due to delayed diagnosis and treatment, surgical treatment should be considered. We report the case of a 46-year-old man with osteomyelitis of the calcaneus who was diagnosed with multidrug-resistant pulmonary tuberculosis and he was treated with anti-tuberculosis drugs. Bilateral adrenal masses, abscess of both testes and a small wound in the left plantar heel were observed. Both adrenal masses and abscess were regarded as paradoxical reaction of anti-tuberculosis treatment. After 1 month, he developed a pain in the left plantar heel that was compatible with calcaneal osteomyelitis in radiological features. He underwent right orchiectomy for right scrotal abscess aggravation and surgical treatment for left calcaneal osteomyelitis. Mycobacterium tuberculosis was confirmed by polymerase chain reaction. The patient was immobilized by cast for 8 weeks and the heel pain gradually improved.

• Journal of Chest Surgery
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• v.47 no.5
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• pp.458-464
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• 2014

Background: The effort to detect lung cancer in ever-earlier stages leads to the identification of an increasing number of patients without preoperative histological diagnosis. The aim of this study is to determine the prevalence and characteristics of benign lesions excised in the context of lung cancer surgery. Methods: We retrospectively analyzed data from 125 surgical procedures. We compared the preoperative clinical or cyto-histological diagnosis with the surgical-pathologic diagnosis in order to identify the percentage of benign lesions excised. Furthermore, other parameters were analyzed, such as age, sex, tumor size, the presence of calcification, and the type of surgery according to subgroup. Results: Of the 125 patients included in the study, 63 (50.4%) had a preoperative histological diagnosis of malignancy, corresponding to 56 cases (44.8%) of primary lung cancer and 7 cases (5.6%) of metastases. The 62 (49.6%) remaining cases without preoperative histological diagnosis were divided among 50 (40%) solitary pulmonary nodules and 12 (9.6%) pulmonary masses. According to the postoperative pathologic examination, we identified 12 (9.6%) benign lesions excised during lung cancer surgery. There were no statistically significant differences by subgroups with respect to age or sex. We found statistically significant evidence regarding the size and wedge resection as the surgical technique of choice for this type of benign lesion. Conclusion: Our study obtained results similar to those published by other groups regarding the resection of benign lesions in lung cancer surgery. This percentage could be a quality management index of indeterminate lung lesions.

• Journal of Chest Surgery
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• v.31 no.2
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• pp.212-215
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• 1998

Pulmonary mucinous cystic tumor of borderline malignancy is very rare and distinguished from bronchogenic cyst or adenocarcinoma of bronchoalveolar type. We present the case of a 63-year-old woman with a right lower lobe mass, found by chest radiographs. The preoperative diagnosis was made as bronchoalveolar cancer by percutaneous needle aspiration of mass. Right lower lobectomy and lymph node dissections were performed. The lobectomy specimen contained variable sized multilocular cystic mucous masses, filled with mucus. Microscopically, the cystic masses are lined with tall columnar mucinous epithelium but some area contains focal cellular atypism and bronchoalveolar cancer like foci. This foci are lack of cellular atypism consistent with bronchoalveolar cancer cell. After lobectomy the patient has remained free from recurrence and distant metastasis for following 12 months period. Pulmonary mucinous cystic tumor of borderline malignancy appears to have a favorable prognosis and should be distinguished from other lung neoplasms.

• Korean Journal of Radiology
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• v.2 no.3
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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.

• Journal of Chest Surgery
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• v.38 no.10 s.255
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• pp.725-728
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• 2005

A case is described in a girl who presented with recurrent life-threatening hemoptysis at the age of 18 months, and had been diagnosed as atrial septal defect with severe cardiomegaly which was presumed to result in pulmonary vein stenosis at the age of 6 months. Closure of atrial septal defect was associated with decreased heart size and improved pulmonary venous flow. However, recurrent life-threatening hemoptysis occurred during follow-up, Computed tomography scan demonstrated left pulmonary vein stenosis and extrinsic compression of the left bronchus by multiple soft tissue density-masses. Exploratory thoracotomy revealed single stenotic left pulmonary vein, and flat left main bronchus compressed by multiple hypertrophied lymph nodes, Unexpected endotrachial tube bleeding during left hilar dissection mandated to proceed to left pneumonectomy, The patient's postoperative course was uneventful. Follow-up chest roentgenography revealed acceptable left hydrothorax without mediastinal shifting, Nevertheless, a long-term follow-up is necessary.