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BDS3 Oral Pathology > cysts of soft tissues - other > Flashcards

cysts of soft tissues - other Flashcards

1
Q

What cyst?

A

ranula

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2
Q

if a ranula expends to the neck what is it called?

A

plunging ranula

extends through mylohyoid muscle

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3
Q

clinical appearance of a ranula?

A

swelling on FOM

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4
Q

What cysts are ranula mostly?

A

extravasation cysts

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5
Q

What cyst is shown?

A

ranula

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6
Q

pathogenesis of thyroglossal cyst?

A

remnants of the thyroglossal duct

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7
Q

clinical presentation of thyroglossal cyst?

A

intraoral lesion are rare

midline of the tongue or FOM

hyoid bone region more common

lump moves upward with swallowing

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8
Q

What cysts is shown?

A

thyroglossal cyst

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9
Q

histopathology of thyroglossal cyst?

A

respiratory epithelial lining

cyst wall may have scattered thyroid follicle

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10
Q

What cysts is shown?

A

thyroglossal cyst

can see thyroid folicles

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11
Q

is the thyroglossal cysts problematic?

A

if the thyroid follicles are active - hyperthyroidism

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12
Q

what cysts is shown?

A

dermoid cyst

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13
Q

clinical presentation of dermoid cyst?

A

midline in FOM

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14
Q

pathogenies of dermoid cyst?

A

enclavement of epithelium in the midline due to deranged fusion of the brachial arches

epithelial remnants of pharyngeal arches and pouches when they fuse

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15
Q

histopathology of dermoid cyst?

A

regular lining

orthokeratinised stratified squamous epithelium

skin appendages in the wall

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16
Q

What cysts is shown?

A

dermoid cyst

17
Q

contents of a dermoid cyst?

A

keratinous debris

18
Q

histological difference between dermoid and epidermoid cyst?

A

dermoid has skin appendages

19
Q

Where can the epidermoid cyst occur?

A

anywhere on head and neck

20
Q

clinical presentation of epidermoid cyst?

A

pea-sized cyst just below the skin surface that has a punctum (black dot) on the skin surface (ostium of a blocked pilosebaceous follicle)

21
Q

What could happen to an epidermoid cyst?

A

become infected and causes skin abscess

22
Q

cyst contents on epidermoid cyst?

A

keratin debris

23
Q

histopathology of epidermoid cyst?

A

ortho-keratinised epithelium

abscent skin apendages

cyst wall is compressed fibrous tissue

24
Q

what cyst is shown?

A

epidermoid cyst

BDS3 Oral Pathology (31 decks)

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