Background: Adrenal schwannomas (AS) are extremely rare neoplasms. This study shares our experience regarding the diagnosis and operative management of AS. Methods: Clinical details, radiologic, laboratory, and pathologic findings as well as follow-up data were analyzed retrospectively for 13 AS patients who accepted surgery at a tertiary referral hospital in China between January 1, 1996, and December 31, 2017. Results: The mean age of the patients at diagnosis was 44.7 ± 13.7 years (range 19–62 years; male: female ratio, 1:1.16), of whom 7 patients had unilateral AS on the right side, and the remaining 6 on the left side. None of the cases were hormonally active. None of the 13 cases were diagnosed as AS by computed tomography imaging before the operation. Among the patients, 10 were asymptomatic. The mean preoperative size was 7.1 ± 3.2 cm (range 1.6–12.6 cm). All patients underwent surgery, with open adrenalectomy in 5 patients and laparoscopy in 8 patients. The mean tumor size on pathologic examination was 6.8 ± 3.0 cm (range 3.0–11.7 cm). The surgical specimens were confirmed by pathological examination. During a median follow-up of 60.8 ± 17.7 months, no patients showed recurrence or metastasis. Conclusion: The preoperative diagnosis of AS remains difficult despite the advances in imaging examinations. After complete resection, the prognosis of AS is excellent.

Background. Cavernous hemangioma is a rare benign tumor that develops from the adrenal glands. In this study, we present our experience with patients with adrenal cavernous hemangiomas (ACH) in a Chinese population. Methods. Demographic, diagnostic, surgical, and pathological findings in patients at a single institution who were adrenalectomized as a result of ACH were retrospectively reviewed. Results. Among 601 patients who underwent adrenalectomy, 8 (1.33%; 5 men, 3 women) cases were diagnosed with ACH between January 1, 1998, and December 31, 2018, in a single institution. The mean age was 53.25 ± 11.9 years (range, 35–67 years). Four (50%) were asymptomatic, and three (37.5%) complained of abdominal or flank discomfort. Preoperative computed tomography (CT) revealed ACH in 3 (37.5%) cases. Well-defined borders and heterogeneous enhancement with characteristic progressive partial filling-in were characteristic CT features of ACH (tumor size>3 cm). The mean tumor size was 5.16 ± 3.4 cm (range, 1.5–11 cm). No recurrence occurred during a median follow-up period of 38.37 months (range, 8–60 months). Conclusions. ACH was asymptomatic in most cases, and diagnosis could be challenging. Adrenalectomy is a safe treatment modality for ACH, and it ensures favorable outcomes.