References :
1.Ali, R., Noma, U., Jansen, M., & Smyth, D. (2009). Ectopic pituitary adenoma presenting as midline nasopharyngeal mass. Irish Journal of Medical Science, 179(4), 593–595.
2. Thompson, L. D. R., Seethala, R. R., & Müller, S. (2012). Ectopic Sphenoid Sinus Pituitary Adenoma (ESSPA) with Normal Anterior Pituitary Gland: A Clinicopathologic and Immunophenotypic Study of 32 Cases with a Comprehensive Review of the English Literature. Head and Neck Pathology, 6(1), 75–100.