Department of Orthopedics, First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, People's Republic of China.
Department of Radiology, First Affiliated Hospital, Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China.
BMC Med Imaging. 2022 Jul 16;22(1):126. doi: 10.1186/s12880-022-00853-y.
Bronchogenic cysts (BCs) are generally detected in the mediastinum, along the tracheobronchial tree, or in the lung parenchyma. Subcutaneous BCs are rare, but, when found, are usually small (< 3 cm) and detected in children.
In an unusual adult case, we treated a 52-year-old woman who presented with a mass in the left intergluteal cleft region. Ultrasonography showed a well-circumscribed hypoechoic lesion with posterior enhancement and internal echogenic foci within the mass. Color Doppler images showed no signals. Computed tomography showed the mass as a homogeneous, 6.8- × 6.3- × 5.1-cm soft tissue-attenuation lesion lodged in subcutaneous fatty tissue. Magnetic resonance imaging revealed a cystic lesion of similar dimensions with heterogeneous hyperintensity on both T1- and T2-weighted images. No contrast enhancement, solid components, or restricted diffusion foci were apparent. The cyst was completely excised, and histopathological evaluation indicated it was a BC. The patient's recovery was uneventful.
BCs should be considered in the differential diagnosis of all subcutaneous cystic masses, regardless of their location and size and the patient's age.
支气管源性囊肿（BC）通常在纵隔、气管支气管树或肺实质中被发现。皮下 BC 很少见，但当发现时，通常较小（<3cm），并发生在儿童中。
在一个不寻常的成年病例中，我们治疗了一位 52 岁的女性，她因左臀间区肿块就诊。超声检查显示肿块为边界清楚的低回声病变，伴后方增强，内部有回声焦点。彩色多普勒图像未见信号。计算机断层扫描显示肿块为均匀的 6.8×6.3×5.1cm 软组织衰减病变，位于皮下脂肪组织中。磁共振成像显示一个类似尺寸的囊性病变，T1 和 T2 加权图像上均呈不均匀高信号。未见强化、实性成分或受限扩散焦点。囊肿被完全切除，组织病理学评估表明为 BC。患者恢复顺利。
无论位置、大小和患者年龄如何，所有皮下囊性肿块均应考虑 BC 的鉴别诊断。
