Journal of Indian Association of Pediatric Surgeons
Journal of Indian Association of Pediatric Surgeons
                                                   Official journal of the Indian Association of Pediatric Surgeons                           
Year : 2006  |  Volume : 11  |  Issue : 2  |  Page : 99--100

Testicular epidermoid cyst and organ preserving surgery

Salih Somuncu1, Murat Cakmak1, Pinar Atasoy2, Hulya Akman1, Sevgi Ulusoy1,  
1 Departments of Pediatric Surgery, Kirikkale University, School of Medicine, Kirikkale, Turkey
2 Departments of Pathology, Kirikkale University, School of Medicine, Kirikkale, Turkey

Correspondence Address:
Salih Somuncu
Kirikkale ‹niversitesi Tip FakŁltesi «ocuk Cerrahisi Anabilim Dali 71100, Kirikkale


Epidermoid cyst is a rare and non-teratomatous, benign tumour of the testis. Testis-sparing surgery is recommended as surgical treatment. We present a 9-year-old-boy with testicular epidermoid cyst. The embryology, histogenesis and treatment of epidermoid cyst of testis, are discussed.

How to cite this article:
Somuncu S, Cakmak M, Atasoy P, Akman H, Ulusoy S. Testicular epidermoid cyst and organ preserving surgery.J Indian Assoc Pediatr Surg 2006;11:99-100

How to cite this URL:
Somuncu S, Cakmak M, Atasoy P, Akman H, Ulusoy S. Testicular epidermoid cyst and organ preserving surgery. J Indian Assoc Pediatr Surg [serial online] 2006 [cited 2023 Jan 28 ];11:99-100
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Full Text

Testicular epidermoid tumours are uncommon, benign tumours and account for less than 1% of all testicular neoplasms. They are extremely rare in childhood and they account for 3% of all pediatric testicular tumours.[1] Epidermoid cysts are benign testicular tumours, which are composed entirely of keratin producing epithelium.[1] It is a nonteratomatous benign tumour and testis sparing surgery is recommended as the surgical treatment.[2] We present a 9 year-old-boy with testicular epidermoid cyst, who experienced a testis- sparing surgery.


A 9-year-old boy presented with a painless mass in the right testis. There was no history of trauma and other systemic illness. A 2x1x1 cm. diameter, semihard, non-tender, right testis was in heterogenous pattern and intratesticular nodules were found in physical examination. The left testis was normal. There was a slight asymmetry of the testicles, with the right testis bigger than the left testis. Serum a-fetoprotein and serum b-HCG were in normal limits. Abdominal ultrasonography was normal.

Testicular ultrasonography revealed a 15x10x10 mm. diameter, heterogenous and hypoechoic intratesticular nodular mass with irregular border, which contains multiple calcific foci associated with distal acoustic shadowing. The cystic mass was uniocular. There was no evidence of increase in flow of the right testicular mass, in colour doppler ultrasonography.

A right scrotal transverse incision was performed and multiple keratinous materials beneath the tunica albuginea and intratesticular cystic mass, were found [Figure 1]. The testicular mass was excised by wedge resection. The section of cystic lesion showed white-yellowish keratinous material [Figure 2]. The testicular tunica was closed and the testis was placed within the scrotum.

Histopathologic examination demonstrated an encapsulated cyst lined by squamous epithelium containing keratinous material and histological diagnosis was that of epidermoid cyst of the testis [Figure 3]. The postoperative period was uneventful.


The epidermoid cyst was firstly described in 1942 by Dockerty and Priestly.[3] Testicular epidermoid cysts are rare and benign tumours and its prevalence is approximately 1% of all testicular tumours.[1] Epidermoid cysts differ from dermoid cysts, as they contain skin and skin appendages and differ from teratomas, as teratomas contain derivates of all germ layers.[1] The absence of mesodermal and endodermal components distinguishes epidermoid cysts from dermoid cyst or teratoma, which have malignant potential. Epidermoid cysts are benign and don't have risk of recurrence and metastasis.[2] Epidermoid cyst of the testis is defined as an intraparenchymal testicular cyst, which is filled with keratinized material and lined by squamous epithelium, but without teratomatous elements or cutaneous adnexal structures.[2] Focal calcification may be found on the cyst wall. or within the cystic lumen.[2]

The histogenesis of epidermoid cyst is unclear. The prevailing hypothesis is that of germ-cell origin, developing along the line of epidermal differentiation, as a monodermal expression of a teratoma.[4] Other hypotheses include that of squamous metaplasia of the rete testis and inclusion of epidermal cyst.[4]

Epidermoid tumours are generally benign tumours in both prepubertal and postpubertal ages.[1] Intratubuler germ-cell neoplasia (carsinoma in-situ) has not been reported in testicular epidermoid tumours, in childhood and adults. Radical orchiectomy has been extensively applied in the early years on the century.[2] Some authors have encouraged testis-sparing surgery in adults in the recent years.[2] Recently, organ preserving surgery has become favored according to traditional orchiectomy, because testis-sparing surgery may offer better psychologic and cosmetic results and the preservation of fertility. Ciftci et al . reported that there was no recurrence in their 3 cases.[5] This approach has been recommended as the treatment of choice, in prepubertal ages.[6] So we used testis-sparing surgery in our case.

Testicular epidermoid cyst is a rare benign tumour and it is classified as intraparenchymal testicular cyst without teratomatous elements. So organ preserving surgery is suggested in testicular epidermoid cyst, in prepubertal ages.


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3Dockerty MB, Priestly JT. Dermoid cysts of the testis. J Urol 1942;48:392.
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