The present case involves a 10-year-old child, male, treated at the stomatology clinic, presenting a tumoral lesion in the lower lip region with a three-year history of evolution. On extraoral examination, the lower lip was voluminous. On intraoral examination, there was a sessile swelling with lobulated consistency, well delimited, in the lower lip of the left side, measuring approximately 4 cm. The diagnostic hypotheses were mucocele, irritative fibroma, benign mesenchymal neoplasm, or salivary gland tumor. An excisional biopsy showed a mucosal fragment lined with stratified, squamous, parakeratinized epithelium and a large number of lymphatic vascular spaces in the fibrous connective tissue, containing lymph, lined with a thin layer of endothelial cells. The diagnosis was Lymphangioma. The patient showed an improvement after the procedure, but still presented a slight swelling in the lip. To verify the aesthetic condition, the patient was referred to a plastic surgeon for examination. The present case involves a 10-year-old child, male, treated at the stomatology clinic, presenting a tumoral lesion in the lower lip region with a three-year history of evolution. On extraoral examination, the lower lip was voluminous. On intraoral examination, there was a sessile swelling with lobulated consistency, well delimited, in the lower lip of the left side, measuring approximately 4 cm. The diagnostic hypotheses were mucocele, irritative fibroma, benign mesenchymal neoplasm, or salivary gland tumor. An excisional biopsy showed a mucosal fragment lined with stratified, squamous, parakeratinized epithelium and a large number of lymphatic vascular spaces in the fibrous connective tissue, containing lymph, lined with a thin layer of endothelial cells. The diagnosis was Lymphangioma. The patient showed an improvement after the procedure, but still presented a slight swelling in the lip. To verify the aesthetic condition, the patient was referred to a plastic surgeon for examination.