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Abstract
To the Editor: Epidermoid cyst, was first described by an artist in a French medical school in 1807,[1] is a kind of congenital disease characterized by a stratified epithelial capsule and laminated keratin debris contents. On the day of discharge, postoperative pathology also confirmed diagnosis of epidermoid cyst according to remarkable keratosis and squamous epithelium. [...]it showed hemorrhage in tumor as arrows pointing [Figure 1]d. Followed up for 6 months, the symptom of the patient had improved without any unconsciousness. Intracranial epidermoid cysts are slow-growing benign tumors, arising from the inclusion of ectodermal tissue during the neural tube closure or formation of the secondary cerebral vesicles. In general, atypical MRI in intracranial epidermoid cysts may be attributed to factors of high proteinaceous content or abundance of polymorphonuclear leukocytes in the cyst, creamy texture or nonsolid of the cyst contents, and calcification and hemorrhage within the cyst. [...]we confirmed that atypical MRI rests ascribable to spontaneous hemorrhage in the case. [...]we also conducted MRS and DWI before operation. MRS images demonstrated low creatine, choline, N-acetylaspartate (creatine and N-acetylaspartate were obvious), and inverted peak of lactate, differing with widely accepted typical spectrum of an intracranial epidermoid cyst, which presents with a high...
