Hemangiosarcomas of the adrenal gland, both benign and malignant, are exceedingly rare; only a dozen of them have been reported in literature to our knowledge. We describe herein the findings at CT of 2 primary hemangiosarcomas of the adrenal glands. We also discuss their etiology, incidence, and differential diagnosis, particularly in relation to more frequent primary adrenal lesions, such as adrenal adenomas and carcinomas. CT will generally show a heterogeneous mass with frequent necrosis, contrast-enhancement, and occasional calcifications. A prospective diagnosis cannot be made by imaging alone, and pathology represents the discriminating method for a correct diagnosis.Key words: Adrenal gland, neoplasms-Adrenal gland, computed tomography.Primary malignant neoplasms of the adrenal gland are uncommon and may involve the adrenal cortex (adenocarcinoma) or the adrenal medulla (pheochromocytoma and neuroblastoma) [1,2]. The adenocarcinoma is the most frequent primary malignant tumor of the adrenal gland. Vascular tumors of the adrenal gland, both benign and malignant, are exceedingly rare. The angiosarcoma probably represents approximately 1-2% of these tumors.Angiosarcomas occur in the skin, breast, retroperitoneum, and visceral organs, with the liver being the most frequent site of visceral organ involvement [3]. Only a dozen primary angiosarcomas of the adrenal gland have been reported in the literature to our knowledge [1, 4 -8], the first case being described in 1988 by Kareti et al.Metastatic involvement of the adrenals by angiosarcomas is much more frequent.We describe the computed tomographic (CT) findings of two primary hemangiosarcomas of the adrenal glands. We also discuss their etiology, incidence, and differential diagnosis, particularly in relation to more frequent primary adrenal lesions, such as adrenal adenomas and carcinomas.
Case reports
Case 1A 67-year-old male, without a significant medical history, presented with left flank pain of 6 months' duration. The patient exhibited no hematuria or hypertension. An intra-