Table 1: Characteristics of cases reported in literature with atypical appearance of epidermoid cysts on MRI.

Reference (n)

Additional Radiological Features

Patient Demographics (Age/Gender)

Site

Symptoms

Adherence; Extent of Resection

Enhancement

Restricted Diffusion

Yes

No

NOS

Hamouda, et al. [6]

(n = 1)

-

1

-

No

50/Female

CPA

Diplopia, Gait Instability

NOS; GTR

Lian, et al. [17] (n = 1)

-

1

-

No

45/Male

Frontal Lobe

Seizures

Adherent, STR

Law, et al. [15]

(n = 1)

-

1

-

No

47/Male

Cerebellum

Headache, Ataxia

NOS; GTR

Prasad, et al. [2]

(n = 1)

1

-

-

Yes

65/Female

Sellar

Visual Loss, Diabetes Insipidus

NOS; STR

Li, et al. [16]

(n = 5)

1

1

3

NOS

29/Female

Parasellar

Headache, Facial Paraesthesia

Adherent; STR

No

49/Female

Clival

Hearing Loss

NOS; STR

NOS

26/Female

Cerebellum

Headache, Vomiting

NOS; GTR

NOS

27/Female

Clival

Headache, Unsteady Gait

NOS; GTR

NOS

46/Female

Clival

Limbic Paralysis

NOS; GTR

Ren, et al. (2012)* [19] (n = 24)

5

19

-

NOS

34/Male

CPA, Sellar

NOS

Adherent, STR

30/Female

CPA, Sellar, Prepontine Cistern

Adherent, GTR

58/Female

Frontal Lobe

Not Adherent, GTR

24/Female

Cerebellum

Adherent, GTR

28/Female

Parasellar

Adherent, GTR

40/Female

Sellar

Not Adherent, STR

38/Female

CPA, Parasellar

Not Adherent, STR

30/Female

Parasellar

Adherent, STR

42/Male

Parasellar

Not Adherent, GTR

37/Female

CPA

Adherent, STR

45/Male

CPA

Adherent, STR

37/Male

Temporal Lobe

Adherent, STR

40/Male

Temporal Lobe

Adherent, GTR

36/Male

Parietal Lobe

Not adherent, GTR

43/Female

Parasellar

Adherent, STR

30/Male

CPA

Adherent, STR

39/Female

Parasellar

Adherent, GTR

31/Male

Frontal Lobe

Adherent, GTR

27/Male

CPA, Parasellar

Adherent, GTR

63/Male

Parafalcine

Adherent, GTR

33/Male

Parasellar

Adherent, STR

43/Female

Cerebellum

Not Adherent, GTR

46/Male

Parasellar

Adherent, GTR

46/Female

CPA, Parasellar

Not Adherent, GTR

Total number of cases: 33

Adherent (19/33);

GTR (19/33)

STR (14/33)

n: Number of patients with atypical epidermoid cysts reported in the study; NOS: Not Otherwise Specified; CPA: Cerebellopontine Angle; GTR: Gross Total Resection; STR: Subtotal Resection; *Study did not report specific MRI features for each case.