• Hong-Feng Qi, Li-Qian Chen, Mai-Qing Yang, Xiu-Feng Li, Hai-Ning Zhang, Ke-Xin Zhang, and Hong-Tao Xu.
• Department of Thoracic and Cardiac Surgery, Changyi People's Hospital, Changyi, China.
• Medicine (Baltimore). 2023 Dec 15; 102 (50): e36739e36739.

RationaleAdenomatoid tumors are rare benign tumors, mainly involving the reproductive tract, such as the epididymis in men and the uterus and fallopian tubes in women. However, a few cases can occur outside the reproductive tract. Herein, we report a rare case of a primary adenomatoid tumor of the adrenal gland.Patient ConcernsA 50-year-old man underwent ultrasound examination and was found to have a right adrenal mass without elevated blood pressure, weakness after fatigue, frequent nocturnal urination urgency, pain, or a history of hematuria. The patient's general health was normal. Computed tomography revealed a polycystic mixed-density lesion in the right adrenal region, approximately 7.3 × 4.5 cm in size.DiagnosesBased on the clinical information, morphological features, and immunohistochemistry results, a pathological diagnosis of primary adenomatoid tumor of the adrenal gland was made.InterventionExcision of the right adrenal gland and tumor through the 11 ribs.OutcomesThe patient's postoperative course was uneventful.LessonsPreventing misdiagnosis adenomatoid tumors with other types of adrenal gland tumors or metastatic tumors is imperative. Morphological and immunohistochemical features can help diagnose primary adenomatoid tumors of the adrenal gland.Copyright © 2023 the Author(s). Published by Wolters Kluwer Health, Inc.

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