Mediastinal Bronchogenic Cyst, which was Grown Rapidly / 결핵및호흡기질환

Bronchogenic cyst arises from anomalous budding of the primitive foregut during embryonic development and it represents a part of the spectrum of bronchopulmonary foregut malformations. Approximately two-thirds of the malformations are found within the mediastinum, and one-third are found in the lung parenchyma. The prevalence of bronchogenic cyst is unknown, presumably because most patients are asymptomatic. Incidentally detected bronchogenic cysts are usually removed at the time of diagnosis. We do not know how and why bronchogenic cysts grow. We recently experienced a case of rapidly growing mediastinal mass in a young adult, and this presented as a huge mass that had newly developed within one year. This mass was pathologically confirmed to be a bronchogenic cyst. We report on this case of a rapidly growing bronchogenic cyst, which is a rare characteristic of this type of cyst.

A Case of Double Primary Neurilemmoma on Both Chest Wall, One of Them is Bulging to Skin from Intercostal Nerve / 결핵및호흡기질환

Neurilemmomas are benign nerve sheath tumors derived from Schwann cells that rarely occur in the chest wall. Neurilemmomas of the chest wall are usually solitary lesions that bulge toward the pleural cavity. Neurilemmomas are confirmed histologically based on the presence of Verocay bodies, Antoni A and Antoni B tissue patterns and S-100 protein. Bilateral neurilemmomas in the chest wall are extremely rare, as are those that grow in the subcutaneous tissue but not the pleural area. We report here a case of bilateral chest wall neurilemmomas in which the tumors bulged out to the skin and were palpable.