• Journal of Chest Surgery
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• v.43 no.2
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• pp.221-223
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• 2010

Bronchogenic cysts are usually located in the pulmonary parenchyma or in the mediastinum. When bronchogenic cysts are located in the mediastinum, they are usually near the bronchus or esophagus, and rarely located in the retroperitoneal space. It is difficult to differentiate between bronchogenic cysts and benign cysts prior to surgert. We report here on a patient for who had a mass in the retroperitoneum, with the preoperative diagnosis being a benign neurogenic tumor. Via left open thoracotomy, pathologic reports revealed that the mass was a bronchogenic cyst. We report here on the case of a bronchogenic cyst that was located in the retroperitoneal space of the diaphragm.

• Journal of Chest Surgery
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• v.22 no.3
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• pp.468-472
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• 1989

Bronchogenic cysts are uncommon congenital lesions which are derived from primitive foregut. Most of the bronchogenic cysts may occur at the tracheal bifurcation, both main bronchi, the lung parenchyme and the mediastinum. We experienced a case of bronchogenic cyst with a esophageal stalk. The diagnosis was made by simple chest x-ray and confirmed by bronchoscopy and chest CT. On the chest CT findings, 6.8X4.8 cm-sized oval shaped mass was located on the right posteroinferior side of the carina, elevating the right main bronchus and the thin wall of the mass was enhanced with contrast materials. On the operative findings, the esophagus and the cyst were connected with a stalk and the cyst was filled with mucinous materials. And on the histological findings, the mass was lined with pseudostratified ciliated columnar epithelium. Thus we report this case of bronchogenic cyst with review of literatures.

• Journal of Chest Surgery
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• v.26 no.9
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• pp.738-742
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• 1993

The gastroesophageal cyst is rare variety of benign developmental cysts in the mediastinum and it arises from sequestrations of nodules of forgut in the developing embryo.The patient was 23 year old man with complaint of right chest pain. Simple chest X-ray and chest CT scan showed a huge homogeneous cystic mass in the posterior mediastinum. The resected cystic mass showed combining of portion of esophagus and stomach. The cyst was confirmed as gastroesophageal cyst.

• Parasites, Hosts and Diseases
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• v.48 no.3
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• pp.213-217
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• 2010

Sarcocystis sp. infection was investigated in 20 necropsied captive wild mammals and 20 birds in 2 petting zoos in Malaysia. The gross post-mortem lesions in mammals showed marbling of the liver with uniform congestion of the intestine, and for birds, there was atrophy of the sternal muscles with hemorrhage and edema of the lungs in 2 birds. Naked eye examination was used for detection of macroscopic sarcocysts, and muscle squash for microscopic type. Only microscopically visible cysts were detected in 8 animals and species identification was not possible. Histological examination of the sections of infected skeletal muscles showed more than 5 sarcocysts in each specimen. No leukocytic infiltration was seen in affected organs. The shape of the cysts was elongated or Circular, and the mean size reached $254{\times}24.5{\mu}m$ and the thickness of the wall up to $2.5{\mu}m$. Two stages were recognized in the cysts, the peripheral metrocytes and large numbers of crescent shaped merozoites. Out of 40 animals examined, 3 mammals and 5 birds were positive (20%). The infection rate was 15% and 25% in mammals and birds, respectively. Regarding the organs, the infection rate was 50% in the skeletal muscles followed by tongue and heart (37.5%), diaphragm (25%), and esophagus (12.5%). Further ultrastructural studies are required to identify the species of Sarcocystis that infect captive wild animals and their possible role in zoonosis.

• Journal of Chest Surgery
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• v.28 no.9
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• pp.869-871
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• 1995

Esophageal duplication cysts are uncommon, benign lesions of the esophagus. They are rare congenital foregut anomalies. To be considered an esophageal duplication cyst, a lesion must meet the following criteria:1 the cyst in the esophageal wall 2 the cyst is covered with a muscularis propria,generally of two layers and 3 the cyst has an epithelial lining consistent with that of the 4 week embryo, which may be columnar or pseudostratified columnar, and may be ciliated. Herein we report a case of an esophageal cyst located within the thoracic cavity, which is, to the best of our knowledge, the first case reported in Korea. Surgery is generally the treatment of choice for esophageal cyst, and was indicated in this case for the diagnosis and management of symptoms attributable to the cyst.

• Journal of Chest Surgery
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• v.10 no.1
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• pp.59-64
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• 1977

Mediastinal tumor are frequently encountered in clinical practice. Hanten, in 1955, reported-2 adult patients with spontaneous rupture of mediastinal dermoid cysts into the pleural cavity and also, Thompson, in 1963, reported 2 child patients with spontaneous rupture of mediastinal teratoma into the pleural cavity. Mediastinal teratomas have also been reported rupture into other contiguous structures, such as the bronchus, aorta, pericardium, SVC and esophagus. This report presents an instance of spontaneous rupture of an anterior mediastinal teratoma into the right pleural cavity of a 43 year old female. Despite variable diagnostic procedures, the true nature of the lesion was not determined until a thoracotomy and window formation was performed for adequate drainage of empyema thoracis. Removal of the teratoma and mediastinal window formation resulted in complete cure.

• Clinical and Experimental Pediatrics
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• v.48 no.6
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• pp.655-659
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• 2005

Esophageal duplication cysts are rare congenital lesions that occur as a result of a failure in the tubulation of the esophagus. They are most frequently single, tubular, or cystic. They may cause compressive symptoms or may be discovered incidentally on chest radiographs. They become symptomatic when complications develop. Symptoms often are related to the location of the duplication; esophageal lesions can create respiratory difficulties. The definitive diagnosis of esophageal duplication cysts requires the pathological evaluation of the cyst after surgical removal. We experienced a rare tubular esophageal duplication, in a 2-month old girl who presented with fever and grunting. This is the first reported case in which the sequence of events of ruptured tubular esophageal duplication with empyema, mediastinitis and aneurysm occured.

• Journal of Yeungnam Medical Science
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• v.1 no.1
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• pp.139-144
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• 1984

A case of foregut cyst communicated with esophagus and lined by bronchial mucosa is reviewed and its embryologic base of maldevelopment is discussed. It is not always easy to distinguish between digestive and respiratory cyst in mediastinum. There is whole range of intermediate between a cyst with ciliated and one with squamous or columnar mucosa. Origin of this dysembryoplasia is difficult to determine when one consider that the esophagus is covered with ciliated epithelium until the eleventh week of fetal life and that ciliated growth are found on its wall until the sixth month of the fetal life. And we concluded, general agreement is that cysts which have gastric epithelium in whole or in part, represent a distinct type and should be classified as (gastro) enteric cyst, mediastinal cyst containing cartilage were considered definitely as respiratory(bronchial or bronchogenic) cyst.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.17 no.1
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• pp.61-67
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• 1984

The life history of a trematod fluck, Himasthla kusasigi was studied on the morphological characters of metacercariae, its infection rate in the clam and the contamination experiment to the herring gull, Larus crassiostris. The size of the metacercariae was $210{\sim}230{\times}220{\mu}m$, excysted metacercariae was $420{\times}160{\mu}m$ and it had 31 collar spines. The ventral sucker($112{\times}100{\mu}m$) was located just below the central part of the body. Esophagus was narrow and long, the intestine was branched in the upper part of the ventral sucker and extended to the hind part of the body. Excretory bladder without the infected part was located in the hind part of the body. The branched excretory tube was filled with the small granules and extended to the pharynx area. The infection rate of the metacercariae varied from place to place. In Naecho do and Puan the rates were $98.4\%$ and $95.9\%$ respectively. The infected number of Himasthla kusasigi per clam was positively proportional to the size of the clam. The adult fluckes developed from the metacercariae were obtained from the experimented herring gull. The metacercariae emerge from their cysts in the stomach of the herring gull, then they migrate it the intestine and 25 days after, most of them were found in the intestine. The size of the adult was $4.8{\sim}7.5{\times}0.22{\sim}0.24mm$, oral sucker; $68{\sim}120{\times}70{\sim}120{\mu}m$, pharynx: $80{\times}50{\mu}m$, ventral sucker: $630{\sim}680{\times}610{\sim}680{\mu}m$. The head collar $48{\sim}75{\times}10{\mu}m$ had 31 collar spines. The isolated trematod fluck from the samples was classified as a Himasthla kusasigi by the morphological characteristics of the adult flock and its metacercariae. We oberved that the second intermediate host of Himasthla kusasigi was hard clam, Meretrix lusoria, while its final host was herring gull, Larus crassiostris and Tringa ochropus.