Abstract A mucocele is a retention cyst in the oral mucosa of small salivary glands. The changes occur predominantly within the lower lip, but sometimes in other locations where there are small salivary glands – on the tongue, floor of the mouth, buccal mucosa, upper lip and palate. This paper presents the rare case of a patient of the Department of Oral Surgery at the Medical University in Lublin, with a Blandin-Nuhn gland cyst, located on the ventral side of the tongue. A patient diagnostic puncture was performed, which confirmed the clinical diagnosis. The cyst was removed using a classical surgical technique described in the article. The paper discusses the causes, predisposing factors and the mechanisms of their formation. We describe two types of cysts which have different locations for stopping the secretions. We present the histology of the retention and extravasation types. We describe the types of salivary glands present on the tongue and the anatomy of the Blandin-Nuhn gland. The authors present the possible locations of retention cysts in the ventral tongue, and present methods of conservative and surgical treatment of Blandin-Nuhn mucoceles. The authors discuss the differential diagnosis and clinical manifestations.
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