What question did this study set out to answer?

To explore the relationship between chronic cough and the diagnosis of mature cystic teratoma.

February 9, 2026Open Access

Chronic Cough Uncovers Mature Cystic Teratoma of the Mediastinum

Key Points

To explore the relationship between chronic cough and the diagnosis of mature cystic teratoma.
Case report of a 31-year-old male with chronic cough
Imaging revealed an anterior mediastinal mass
Histopathological examination confirmed mature cystic teratoma
En bloc resection was performed
Mature cystic teratoma confirmed as the diagnosis
Patient demonstrated excellent postoperative prognosis
Condition accounts for 1%-5% of mediastinal tumors
Highlights the need for timely radiological evaluation

Abstract

We report a case of a 31-year-old male who presented with chronic dry cough and was found to have an anterior mediastinal mass on imaging. Following en bloc resection, histopathology confirmed a mature cystic teratoma, the most common mediastinal germ cell tumor. The patient had an excellent prognosis postoperatively. Mature cystic teratomas account for 1%–5% of all mediastinal tumors and often present asymptomatically or with nonspecific symptoms. This case highlights the importance of early radiological evaluation and surgical excision to prevent complications such as malignant transformation or rupture .

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