Cutaneous Ancient Schwannoma of the Ear
Schwannoma is a benign encapsulated nerve sheath tumor composed of Schwann cells, that may arise anywhere along the course of a nerve. Cutaneous schwannomas, associated with peripheral nerves, usually present as a slow-growing well-circumscribed nodule, localized in the dermis or subcutaneous tissue. They are generally asymptomatic; however, they may become painful by the nervous compression. Since the clinical signs are non-specific, histology is required for a definitive diagnosis. Herein, we present a case of a solitary cutaneous ancient schwannoma of the ear, a histopathological variant of schwannoma with distinctive morphological characteristics.
Noh S, Do JE, Park JM, Jee H, Oh SH. Cutaneous Schwannoma Presented as a Pedunculated Protruding Mass. Ann Dermatol. 2011;23(Suppl 2):S264-S266.
Ritter SE, Elston DM. Cutaneous Schwannoma of the Foot. Cutis. 2001;67(2):127-129.
Kondo RN, Pontello Júnior R, Taguti PS. Cutaneous schwannoma: an atypical presentation. An Bras Dermatol. 2017;92(3):441-2.
Serban O, Poanta LI, Mihaileanu F, Fodor D. Schwannoma of the lower leg with malignant transformation, a case report. EJCRIM. 2015; 2.
Patel AH, Makhijani S. Cutaneous schwannoma presenting as a lower back mass. International Journal of Surgery Case Reports. 2017; 32: 25-28.
Carter JJ, Langman G, Orpin SD. A solitary painful papule on the ear. Clin Exp Dermatol. 2009;34:125-126.
Argeny ZB, Balogh K, Abraham AA. Degenerative ("ancient") changes in benign cutaneous schwannoma. A light microscopic, histochemical and immunohistochenfiical study. J Cut Pathol. 1993; 20:148-153.
Cárdenas LF, Sangüeza O. Schwannoma con cambios degenerativos, schwannoma anciano. Rev Asoc Colomb Dermatol. 2009;17: 236-8.
Fong KL, Bouwer H, Baranyai J, Jones RW. Ancient Schwannoma of the Vulva. Obstet Gynecol. 2009; 113:510-512.
Park J, Roh SG, Hwang SR, Kim JI, Kim HU, Yun SK. Cutaneous ancient schwannoma of the forehead. Eur J Dermatol. 2013; 23: 518-519.
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