Here is a brief summary of the article: The case report describes the case of a 54-year-old man with a rare, benign tumor - a mature cystic teratoma - on the tail of the pancreas. The tumor was discovered accidentally during a routine examination. Preoperative imaging methods could not clearly determine the nature of the lesion. The patient underwent laparoscopic resection of the lesion with percutaneous abdominal drainage. Histological examination confirmed the diagnosis of mature cystic teratoma. The patient is monitored postoperatively for the potential risk of malignancy. After more than 10 months of follow-up, there were no signs of recurrence. The article highlights the diagnostic difficulties in the evaluation of cystic lesions of the pancreas and the need for a cautious approach to extensive surgical resections.