tumours include large cell (carcinoid), atypical and small cell carcinomas.
This cell type was intermediate between epidermoid
and mucous-producing cells.
An otherwise ordinarily occurring epidermoid
cyst in most of the cases is considered as a benign and harmless one.
Histologically, the tumor was consistent with a high-grade mucoepidermoid carcinoma, characterized by the presence of epidermoid
, intermediate, and mucous-producing cell types.
On the other hand, other causes of painful ophthalmoplegia, including lymphoma, menengioma, craniopharyngioma, paracellar epidermoid
cyst, caroticocavernous fistule, thrombosis of the cavernous sinus, giant cell arteritis, systemic lupus erythematosus, diabetic ophthalmoplegia, and ophthalmoplegic migraine, should be excluded by the appropriate methods (10,11,12,13).
EVHC are benign middermal cysts characterized by epidermoid
keratinization of the cyst wall, as well as lamellar keratin and vellus hairs within the cyst.
Histopathological features are consistent with an epidermoid
type of median raphe cyst.
The patient had suffered from an advanced epidermoid
carcinoma of the lung for 2 years.
Conclusion: The most common cerebellopontine angle tumor is acoustic neuroma which is followed by meningioma, epidermoid
and arachnoid cyst.
13 The causes of both epidermoid
and dermoid cysts include failure of surface ectoderm to separate from underlying structures, sequestration and implantation of surface ectoderm.
Cyst with a Metabolic Pattern mimicking a Brain Abscess.
There is a relation with numerous extraintestinal manifestations, which include osteomas, epidermoid
cysts, and desmoid tumors.