Non-infected and Infected Bronchogenic Cyst: The Correlation of Image Findings with Cyst Content

Repeated misdiagnosis of small intestine bronchogenic cyst: a case report

Bronchogenic cysts are uncommon congenital malformations of the respiratory system. These cysts can be categorized as intrapulmonary, mediastinal, or ectopic. Ectopic bronchogenic cysts, which lack distinctive clinical and imaging features, are particularly challenging to diagnose. This study presents a 48-year-old woman having a small intestinal bronchogenic cyst. She was repeatedly misdiagnosed as having an ovarian chocolate cyst or a cystic mass of bladder origin three years ago. However, no cyst was found during the operation. Half a year prior to presenting at our hospital, the patient developed frequent urination, prompting her to seek further treatment. We eventually discovered a cyst in the small intestine. The histological evaluation of the specimen showed a bronchogenic cyst. Small intestine bronchogenic cysts are extremely rare and easily misdiagnosed. It should be considered as one of the differential diagnoses of pelvic cysts. Particularly, when intraoperative exploration of the pelvic cavity fails to detect any cysts, consideration should be given to the possibility of small intestine bronchogenic cysts.

Imaging Findings and Misdiagnosis of Bronchogenic Cysts: A Study of 83 Cases

Objective

We characterize computed tomography (CT) and magnetic resonance imaging (MRI) features of bronchogenic cysts (BCs) and analyze misdiagnosis.

Methods

The retrospective study consisted of 83 patients with BCs. CT and MRI images were assessed for mass location, maximum diameter, density, calcification, signal intensity, and enhancement pattern. Eighty-three patients underwent plain CT in which 53 underwent enhanced CT. Thirteen patients received both plain and enhanced MR, and only one received just a plain MR.

Results

Eighty-three masses were all solitary, with 71 having a roundish morphology, and twelve having a lobulated or irregular morphology. Sixty-six masses are mediastinal type, four are intrapulmonary type, and 13 are ectopic type. Calcification occurred in 14 lesions. On plain CT, 13 lesions displayed water-like attenuation (-20-20 Hu), and 70 showed soft-tissue attenuation (≥21 Hu). On T1WI, eight masses were hyperintense, three were isointense, and three were hypointense. Fourteen masses were hyperintense on T2WI and (Apparent Diffusion Coefficient) ADC sequence. On (Diffusion Weighted Imaging) DWI, six masses were hypointense and eight were hyperintense. Enhanced T1WI showed seven cases were unenhanced, while six were marginally enhanced. Twenty cases were misdiagnosed as thymomas, eleven as neurogenic tumors, six as lymphangiomas, and two as lung cancer. Five cases were misdiagnosed as other diseases. Patients with BCs underwent MR (42.9%) had a lower rate of misdiagnosis than those who underwent CT alone (53.0%).

Conclusion

The imaging findings of BCs in the chest are generally consistent. Misdiagnosis occurs frequently when CT attenuation values exceed 20 Hu. Diagnostic accuracy of BCs tends to improve with preoperative MR examination.

Surgical Experiences of Pediatric Cervical Bronchogenic Cysts: A Case Series of 6 Patients

OBJECTIVES

Bronchogenic cyst is a rare congenital disease which occurs especially in the neck region. This report presents 6 cases of bronchogenic cysts and discusses the diagnosis and surgical experience of this anomaly.

METHODS

A retrospective study of 6 pediatric patients with cervical bronchogenic cysts treated in our hospital during 2016 to 2019 was performed. We recorded and analyzed the clinical data of the patients, including age, symptoms, imaging findings, surgical procedure, and complications.

RESULTS

All patients underwent surgical excision. The chondroid tissues were found at the base of cysts which clung to the trachea in 5 patients and completely removed by surgery without recurrence. One patient showed recurrence due to residual cartilage after the first surgery, and the second surgery was required to resect the remaining cartilage. During the surgery, the recurrent laryngeal nerve (RLN) detector was used, which confirmed that all the RLNs clung to the side wall of cysts. All cases were cured without complications.

CONCLUSIONS

Although rare, bronchogenic cysts should be considered in the differential diagnosis of peritracheal masses in children. Complete resection of the bronchogenic cysts, including the cartilages at the base, is vital in preventing recurrence. The RLN must be protected during the surgery.

Intramural Bronchogenic Cysts in the Pediatric Population

A bronchogenic cyst is a rare congenital malformation. It occurs due to the development of buds in any part of the tracheobronchial area. It can also lead to fatal complications, especially in the early stages of life. However, data on its diagnosis and treatment are scarce, owing to the rarity of the disease. This review article aimed at evaluating the literature on the manifestations of intramural bronchogenic cysts in the pediatric population. Medical databases were examined thoroughly to explore eligible articles for inclusion. Twenty-three articles appeared in the search result. The produced reports were evaluated against the predecided inclusion criteria. After reviewing the literature, eight articles were eligible for inclusion in this review. The included articles were published between 2000 and 2020. An intramural bronchogenic cyst is a rare condition that should not be neglected in a differential diagnosis. Surgical excision is currently the recommended management strategy. Further extensive studies about the management of the complications of intramural bronchogenic cysts are needed.