When the bullae are subepidermal , they are tense , and ulceration and scarring may result .

如果大疱位于表皮下，则疱壁紧张，最终可能形成溃疡和瘢痕。

To sum up experience in nursing on treatment of bullae of lung by subaxillary longitudinal minor incision with no injury to muscle .

总结不伤肌肉腋下纵行小切口入胸治疗肺大疱的护理。

Even though true cavitary sarcoidosis is rare , pseudocavities representing bullae or bronchiectasis are common in patients with extensive fibrosis .

虽然结节病很少见真性空洞，但是可有肺大泡的假空洞及广泛纤维化形成的支气管扩张。