Un adénome des glandes muqueuses bronchiques réséqué par voie endoscopique

FDG-avid pulmonary mucous gland adenoma mimicking lung cancer on 18 F-FDG PET/CT: a rare case report and literature review

BACKGROUND

Pulmonary mucous gland adenoma (MGA) is an exceptionally rare benign tumor. Even with the assistance of 18 F-FDG PET/CT, the accurate diagnosis of MGA as lung cancer remains challenging. Only one case of fluorodeoxyglucose(FDG)-avid pulmonary mucous gland adenoma and two case of low FDG uptake pulmonary mucous gland adenoma have been reported in English literature, while a single case of moderately increased FDG uptake pulmonary mucous gland adenoma has been documented in French literature. To minimize misdiagnosis and select appropriate treatment strategies, it is crucial to comprehensively analyze its 18 F-FDG PET/CT manifestations in conjunction with clinical symptoms and pathological findings.

CASE PRESENTATION

In our study, we present a case involving a 70-year-old woman with clinical manifestations of persistent cough and sputum with an FDG-avid mucous gland adenoma mimicking lung cancer on 18 F-FDG PET/CT imaging. Ultimately, the patient underwent a potentially unnecessary video-assisted thoracoscopic lobectomy, and the pathological diagnosis was determined to be MGA. The patient was discharged and remained clinically well without any complaints for a period of 6 months.

CONCLUSIONS

The use of 18 F-FDG PET/CT lacks specificity in detecting MGA and may lead to misdiagnosis as a lung malignancy. A comprehensive analysis combining clinical manifestations, bronchoscopy findings, imaging results, and pathological findings is essential for accurate identification of pulmonary mucus gland adenoma.

Case report: Bronchoscopic intervention for rare benign airway tumors: a report of 4 cases and literature review

Due to their unique location, airway tumors have a significant impact on patient quality of life and survival. Current research has focused extensively on malignant airway tumors; however, benign airway tumors, especially rare ones, are less understood due to their low incidence. These tumors are often misdiagnosed and mistreated due to diagnostic challenges. Therefore, there is still a lack of consensus on the treatment of some rare benign airway tumors. Our center summarizes the diagnosis and treatment of four rare cases of benign airway stenosis in recent years, highlighting the bronchoscopic manifestations and therapeutic approaches to improve the understanding of these diseases.

[A case of bronchial mucous gland adenoma: A rare diagnosis that should not be mistaken!]

We report the case of a 32-year-old man, who was admitted for a recurrent pneumopathy. The thoracic computed tomography revealed a small well-circumscribed lesion of the lower right lobe of the lung. Microscopic examination from the biopsy material of the endoscopy concluded a mucoepidermoid carcinoma. A lobectomy was realized. Microscopic examination revealed the presence of a well-delineated lesion composed of glands and cysts containing mucous and limited by mucous and cylindric and ciliated cells without atypia. The proliferation index was very low. A diagnosis of mucous gland adenoma was made. It is an exceptional tumor and is very difficult to diagnose on biopsy material but should be known by pathologists. It is associated with a good prognosis. The aims of our observation are to present the macroscopic and microscopic features of this tumor and data from recent literature review to better diagnose it. This is also the second observation with molecular details for this entity.