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PATHOLOGICAL GROUPS (BRAIN/HEAD) > SKULL BASE > Flashcards

SKULL BASE Flashcards

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1
Q

Whats the importance of MRI in the study of skull base lesions?

A
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2
Q

When do u consider the enhancement of dura to be dural invasion? What`s the importance?

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3
Q

Major points on perineural spread in H&N malignancies?

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4
Q

Name the 4 categories of skull base lesions?

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5
Q

Nme all of the strutures surrounding the Crib. Plate in coronal view?

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6
Q

Keros classification is applied to what?

Whats the maximum grade and its meaning?

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7
Q

Where is located foramen cecum?

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8
Q

Whats passes through:

  • Foramen caecum?
  • Foramina of cribiform plate?
  • Optic canal?
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9
Q

Name the ANTERIOR skull base lesions?

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10
Q

Major points of Encephalocele?

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11
Q

?

A

Fronto-ethmoidal Encephalocele.

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12
Q

Brain abnormalities possibly associated with Encephalocele?

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13
Q

Description and dx?

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14
Q

Major topics on Areas of Arrested Pneumatization?

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15
Q

Explain process of pneumatisation of the paranasal sinus?

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16
Q

Arrested pneumatization in CT/MRI?

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17
Q

?

A

Arrested Pneumatisation

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18
Q

DDx of Arrested Pneumatization?

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19
Q

Major topics on Fibrous Displasia?

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20
Q

Whats the McCune Albright syndrome?

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21
Q

What sinus is more affected by Mucoceles?

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22
Q

?

A

ATTENTION

No continuation with intracranial compartment!

Different from encephalocele!!!

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23
Q

Major topics on Fungal Sinusitis?

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24
Q

Types of Fungal Sinnusitis?

A

Mucosa affection will have traduction on imaging

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25
Q

?

A

Allergic Fungal Sinusitis

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26
Q

Allergic Fungal sinusitis in CT/MRI?

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27
Q

Imaging features of Allergic Fungal Sinusitis?

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28
Q

Major points on PARANASAL MYCETOMAS?

Imaging features?

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29
Q

Causes of ACUTE INVASIVE FUNGAL SINUSITIS?

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30
Q

ACUTE vs CHRONIC Invasive Fungal Sinusitis in CT?

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31
Q

Possible alterations of bone in Fungal Sinusitis?

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32
Q

Causes of Skull Base CSF Leaks?

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33
Q

In the lesions of Anterior Skull Base, enumerate the ANTERIOR CRANIAL TUMORS?

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34
Q

MT Inverted Papilloma?

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35
Q

Ddx Anterochoanal Polyp VS Inverted Papilloma?

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36
Q

Imaging MRI of Inverted Papillomas?

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37
Q

?

A

Inverted Papilloma with typical convoluted pattern.

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38
Q

Is there bone destruction in the benign Inverted Papilloma?

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39
Q

MT Sinonasal Malignant Tumoral Lesions?

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40
Q

Major CT findings in Malignant Sino-nasal Tumor?

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41
Q

?

A

Dx: Malignant Lesion of Sinonasal region

More common are….

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42
Q

?

A
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43
Q

Lymphoma in the SINUS vs NASAL CAVITY are of the same type?

A

Sinus (lateral) = B

Nasal (central) = T (like a nose)

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44
Q

Sino-nasal lymphoma in CT/MRI?

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45
Q

DDx Sinonasal Lymphoma?

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46
Q

MT on ESTHESIONEUROBLASTOMA?

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47
Q

Olfactary Neuroblastoma:

  • Where is the waist? Why?
  • What is the pathognomonic feature?
  • Enhancement? Calcium?
  • Metastases?
A
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48
Q

% of metastases in Olfactory Neuroblastoma?

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49
Q

?

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50
Q

?

A

Olfactory Groove Meningioma

51
Q

?

A

Olfactory Groove Meningioma

52
Q

5 malignant criteria of Meningioma?

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53
Q

MIDDLE SKB ANATOMY

which bones form this area?

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54
Q

…

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55
Q

…

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56
Q

…

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57
Q

…

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58
Q

…

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59
Q

.

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60
Q

…

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61
Q

this space is connecting which 2 fissures?

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62
Q

…

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63
Q

.

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64
Q

…

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65
Q

…

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66
Q

…

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67
Q

.

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68
Q

foramen lacerum mp?

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69
Q

what passes foramen ovale?

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70
Q

what passes foramen rotundum

A
71
Q

…

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72
Q

all the central skb lesions

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73
Q

signs of skb fx

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74
Q

…

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75
Q

SELLAR AND PARASELLAR LESIONS

enumerate

A
76
Q

INVASIVE PITUITARY ADENOMA

ddx

A
77
Q

.

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78
Q

.

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79
Q

.

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80
Q

…

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81
Q

PARASELLAR MENINGIOMA

what symptom can occur if the cavernous sinus is involved

A
82
Q

what causes the mottled pattern of meningioma?

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83
Q

.

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84
Q

.

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85
Q

.

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86
Q

.

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87
Q

.

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88
Q

.

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89
Q

meckel cave meningioma VS trigeminal neuroma

A
90
Q

…

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91
Q

lesions within the Meckel cave?

A
92
Q

trigeminal schwannomas different locations

which one is the most common

they can be associated with which disease

A

nf 2

93
Q

ddx of small ganglionic trigeminal schwannomas

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94
Q

…

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95
Q

…

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96
Q

.

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97
Q

.

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98
Q

.

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99
Q

.

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100
Q

.

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101
Q

PARASELLAR ANEURYSMS

mp

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102
Q

…

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103
Q

.

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104
Q

SKB CHONDROSARCOMA

predisposing conditions

locations

ddx

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105
Q

.

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106
Q

.

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107
Q

.

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108
Q

.

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109
Q

.

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110
Q

RHABDOMYOSARCOMA

mp

affect normally which age group

what histology associated w worst px

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111
Q

.

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112
Q

RHABDOMYOSARCOMA

points of origin

% that reach intracranially

% metastases

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113
Q

.

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114
Q

.

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115
Q

.

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116
Q

.

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117
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.

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118
Q
A

PATHOLOGICAL GROUPS (BRAIN/HEAD) (10 decks)

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