Epidermoid.com

Study design: Report of an epidermoid cyst with intramedullary localization.
Objective: To describe an atypical presentation of intramedullary epidermoid cyst.
Summary of background data: Intramedullary epidermoid cysts are rare entities with a marked variability in the clinical presentation, essentially of neurological pertinence.

Epidermoid Cysts of the Testicle: Sonographic and MR Imaging Features
OBJECTIVE. The purpose of this study is to analyze the appearance of testicular epidermoid cysts on high-resolution sonography and MR imaging and correlate imaging features with histopathologic findings.
CONCLUSION. Intratesticular epidemıoid cysts may show imaging features that correlate with their histopathologic findings. Concentric rings of alternating hypo- [...]

Chemical Analysis of an Epidermoid Cyst with Unusual CT and MR Characteristics
Authors: F. A. Timmer, M. Sluzewski, M. Treskes, W. J. J. van Rooij, J. L. J. M. Teepen, and D. Wijnalda
Summary: Chemical analysis of the contents of a so-called bright epidermoid of the posterior fossa with unusual CT and MR imaging characteristics suggested that [...]

Epidermoid cyst of intrapancreatic spleen is described but epidermoid cyst occurring in the pancreas itself is not documented. We report a 36-year-old man who presented with abdominal pain radiating to the back. On ultrasonography, a multilocular cyst was seen in the head of the pancreas. Fine-needle aspiration cy­tology suggested a diagnosis of epidermoid cyst, which [...]

Epidermoid cyst in the spinal cord is a rare condition, constituting only 0.6–1.1% of all spinal tumors.1 The majority of spinal epidermoid cysts are subdural and extramedullary, while intramedullary localization is very rare.
Intramedullary epidermoid cyst is common in lumbosacral and thoracic regions; two frequent localizations are T4–T6 and T11–T12, while only three cases have been [...]

Discussion: There are congenital and acquired epidermoid cysts. Congenital type is a non-neoplastic inclusion of ectoderm during neural tube closure or formation of secondary cerebral vesicles. Acquired type is implanted epidermis, usually by nonstylet needle punctures (as in lumbar puncture). Grossly, it is a well-defined lobulated cystic lesion, which insinuates along CSF cisterns.

Cysts are harmless, sac-like growtsh in the deeper layers of the skin. They form from the lining of a hair follicle that gets blocked. It is not known why cysts appear, nor why some persons get many of them.