Teratoid Cyst of the Postauricular Region: The First Ever Case Report

Abstract

Rudolf Virchow is considered to be the first scientist to have used the word sebaceous cyst. It was thought that these lesions occurred due to retention of sebaceous secretion consequent to obstruction of sebaceous ducts of sebaceous glands, although that was found not to be the case. In all these cysts, the cavity is filled with keratin. There are six types of keratin-filled cysts, namely, epidermoid, dermoid, teratoid, keratinous, trichilemmal, and teratoma cyst, which have one common name “dermoid cyst.” Of the six, teratoid cyst is the least common. In contrast to other dermoid cysts, teratoid cysts contain tissue elements derived from all the three germ layers, namely, ectoderm, mesoderm, and endoderm. Teratomas can be differentiated from teratoid cysts by the fact that recognizable organ structures may be found in the former; examples include teeth and skin. Teratoid cysts can develop anywhere in the body but rarely arise in the head and neck region. They have never been reported in the postauricular region. In this case report, we present a case of teratoid cyst in the postauricular region in a 21-year-old female. The significance of this case lies in its rarity.

Teratoid Cyst with Nephrogenic Elements: A Rare Case

“…[8] Teratoid cyst was also excised in all the literatures studied. [1,2,3,4] Combination of these two entities has never been reported before, to the best of our knowledge.…”

“…Other locations where these cysts have been reported in are mandible, submental region, large intestine, mediastinum, thymus, nasopharynx, spinal cord, kidney, and the eyes. [3] We report an unusual case of intestinal duplication cyst and teratoid cyst in a single patient with rare nephrogenic elements in the teratoid cyst wall, to the best of our knowledge such case with teratoid cyst with nephrogenic elements and intestinal duplication cyst together has never been reported before.…”

“…Out of these six, teratoid cyst has been observed to be very rare. [3] Dermoid cysts are regarded as either congenital in origin, when they are sometimes known as benign teratomas, or acquired due, it is supposed, to traumatic implantation of epidermal tissue and then are sometimes referred to as epidermoid cysts. Congenital dermoids, or benign teratomas, which strictly are neoplasms with elements of all three germinal layers, arise commonly in the ovary, less so in the testis, and in midline sites.…”

“…Other rare causes included intrauterine trauma or hypoxia. For the diagnosis of an enteric duplication cyst, three essential characteristics are: (1) a well-developed smooth muscle coat; (2) mucosal lining found within some portion of the alimentary tract; (3) contiguity to any segment of the alimentary tract . [7] All these criterias were fulfilled in our case.…”

Penatalaksanaan Kista Teratoid Leher

“…Lokasi lain yang dilaporkan adalah di mandibula, regio submental, usus besar, mediastinum, timus, nasofaring, spinal cord, ginjal dan mata. 7 Kista ini umumnya lebih banyak pada laki-laki dibandingkan perempuan dengan ratio 3:1. 1 Sangat jarang ditemukan pada usia bayi Kista ini muncul pada dekade dua sampai tiga kehidupan.…”