1. Tischler AS. Pheochromocytoma and extra-adrenal paraganglioma: updates. Arch Pathol Lab Med 2008;132:1272-1284.
2. Pheochromocytoma
3. Kubota Y, Nakada T, Sasagawa I, Yanai H, Itoh K. Elevated levels of telomerase activity in malignant pheochromocytoma. Cancer 1998;82:176-179.
4. Rebai W, Kacem M, Jouini M, Bedioui H, Fterich F, Ayadi S, Daghfous A, Chebbi F, Makni A, Chouikh T. Malignant extra-adrenal pheochromocytoma--a diagnostic dilemma. Tunis Med 2010;88:684-685.
5. Recent Advances in the Diagnosis and Treatment of Pheochromocytoma