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OMOPOR > OR in OP > Flashcards

OR in OP Flashcards

1
Q

A 55 y/o male came for screening under the UG programme. Upon taking an OPG, a radiolucent lesion was observed. Its epicentre was noted to be around the roots of the upper central incisors. Based on the location, what could be the diagnosis?
Lateral periodontal cyst
Nasopalatine duct cyst
Odontogenic keratocyst
Stafne bone defect

A

Nasopalatine duct cyst

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2
Q

You took a DPT for your patient and noticed that there is a radiolucent lesion located within the IAC. Which of the following is a possible differential diagnosis?
Ameloblastoma
central hemangioma
Osteoma
Stafne defect

A

central hemangioma

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3
Q

Patient has chronic osteomyelitis. What would you expect to see in a radiograph taken?
Circumscribe, well-defined radiolucent area of bone loss at the apex
Diffused radiopaque dense, sclerotic bone around the root of tooth
Sequestrum. Starting to appear sclerotic. Often mixed radiolucency/ radiopacity internally
Sequestrum. Subtle decrease in bone trabeculation.

A

Sequestrum. Starting to appear sclerotic. Often mixed radiolucency/ radiopacity internally

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4
Q

Which of the following is false about osteomyelitis?

Patients with sickle cell anemia are more likely to develop osteomyelitis following odontogenic infections
Radiographically, acute osteomyelitis presents with bony sequestrum
DPTs are common diagnostic tools for osteomyelitis
Patient might present with mobile teeth that are tender to percussion

A

Radiographically, acute osteomyelitis presents with bony sequestrum

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5
Q

You are presented with a dental panoramic radiograph showing a cyst. Which of the following is a characteristic that the cyst most likely possesses?
Ill-defined borders
Unilocular
Multifocal lesions
Radiopaque

A

Unilocular

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6
Q

Which of the following is a common radiographic characteristic of cysts?
Irregular shape
Multilocular
Radiopaque
Well-defined borders

A

Well-defined borders

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7
Q

Which condition is the exception to the rule of “ill-defined = aggressive

Fibrous dysplasia
Multiple myeloma
Cementoossifying fibroma
Osteomyelitis

A

Fibrous dysplasia

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8
Q

Which of the following description is correct for the radiographic lesion?

https://pasteboard.co/IapK0sy8seqd.png

It has moderately well defined and partially corticated borders.
It has moderately well defined and encapsulated borders
It has ill defined borders and encapsulated borders.
It has ill defined borders and partially corticated borders.

A

It has moderately well defined and partially corticated borders.

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9
Q

A 40 year old male patient complains of swelling and pain in the body of his left mandible. Upon clinical examination, you found that some of his teeth in the region are mobile. The picture below shows the radiograph taken that day. Which of your following is an appropriate differential diagnosis?

https://pasteboard.co/gPqBhAEMPRv2.png

Burkitt Lymphoma
Osteosarcoma
Osteomyelitis
MRONJ

A

Osteosarcoma

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10
Q

Well-defined borders are usually characteristic of most cysts, benign tumours and some fibro-osseous lesions. Which of the following is an exception to this rule?

Ameloblastoma
Radicular cyst
Multiple myeloma
Cemento-ossifying fibroma

A

Multiple myeloma

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11
Q

Which of the following is not a radiographic characteristic of a cyst?

Radiopaque
Corticated borders
Unilocular
Well-defined borders

A

Radiopaque

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12
Q

What radiographic feature must a lesion have to be considered benign?

Mixed internal contents
Ovoid shape
Unilocular
Well defined borders

A

Well defined borders

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13
Q

Malignant tumors such as metastatic breast carcinoma are most likely to be described with which of the following ‘Edges’ descriptions:

Encapsulated
Mixed borders
Corticated
ill-defined borders

A

ill-defined borders

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14
Q

What is the following is a differential diagnosis for ill-defined borders?

Ameloblastoma
cemento-ossifying fibroma
periapical cemento-osseous dysplasia
squamous cell carcinoma

A

squamous cell carcinoma

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15
Q

Which of the below is the most typical radiographic description of a cyst?

Well- defined border, encapsulated, circular/ ovoid + radiolucent, multilocular
Ill- defined border, encapsulated, circular/ ovoid + radiopaque, multilocular
Mixed- border, non- corticated, scalloped + radiopaque, unilocular
Well- defined border, corticated, circular/ ovoid + radiolucent, unilocular

A

Well- defined border, corticated, circular/ ovoid + radiolucent, unilocular

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16
Q

Which of the following is a possible differential diagnosis for a lesion with ill-defined borders?

Cyst
Benign tumor
Malignant tumor
Aggressive benign Malignant tumor

A

Malignant tumor

17
Q

67 year old Mdm Wong walks into your clinic complaining of pain and swelling in her jaw area. After taking Xrays, you suspect that she has ameloblastoma. What radiographic features on her X-ray led you to come up with this differential diagnosis?

The lesion was large, well-defined and multilocular.
Her teeth appear to be floating in the radiograph
There is asymmetric widening of PDL space and loss of laminate dura in her mandibular right posterior teeth.
There is a radioopaque lesion in her left mandible

A

The lesion was large, well-defined and multilocular.

18
Q

Ill-defined borders are usually associated with aggressive lesions & malignancies except?

Periapical cyst
Fibrous dysplasia
Ameloblastoma
Cemento-ossifying fibroma

A

Fibrous dysplasia

19
Q

Well-defined borders are typically characteristic of benign tumours. An exception for this rule is Langerhan’s cell histiocytosis, which is a malignant tumour presenting with well-defined borders as seen in the DPT provided. In such cases, what characteristic would help us differentiate this aggressive lesion from a benign one?

https://pasteboard.co/GXuQBsLvqzvk.png

Radiolucency
Mulitlocular
Non-corticated
Round shape

A

Non-corticated

20
Q

LESION mnemonic can be used to classify radiographic pathology. Which of the two categories are most crucial in determining whether a lesion is malignant or benign?

Internal contents and architecture (I) and number (N)
Edges (E) and effect on other structures (O)
Location (L) and edges (E)
Shape and size (S) and effect on other structures (E)

A

Edges (E) and effect on other structures (O)

21
Q

Which of the following lesions is this?

https://pasteboard.co/ThXIc4p0m2gD.png

Radicular Cyst
Odontogenic Keratocyst (OKC)
Ameloblastoma
Odontoma

A

Odontogenic Keratocyst (OKC)

22
Q

Which of the following statement is the wrong about the principle of readiographic interpretation?

Assymmetric widening of PDL space and loss of lamina dura can be a sign of malignancy.
Both benign and malignant tumours can produce calcifications as internal content.
Inflammatory lesion and malignant tumours usually have ill-defined boarders.
Lesion present at teeth bearing area or below IDN canal are usually from odontogenic origin.

A

Lesion present at teeth bearing area or below IDN canal are usually from odontogenic origin.

23
Q

Which of the following malignant pathologies does not have poorly defined borders radiographically?

Odontogenic keratocyst
Osteosarcoma
Langerhans cell histiocytosis
Prostate cancer metastasis

A

Langerhans cell histiocytosis

24
Q

Which of the following metastasis can be radioopaque and stimulate periosteal reaction?

Breast
Stomach
Liver
Bone

A

Breast

25
Q

Which of the following radiopaque lesion is malignant?

Dense Bone Island
Fibrous Dysplasia
Osteoma
Osteosarcoma

A

Osteosarcoma

26
Q

A 30 year old man presents with painless swelling of the jaw and complains that the swelling is causing his teeth to be crooked. Upon radiographic examination, the lesion has ill defined borders. Normally we would think that such a disease as malignant and aggressive. Which disease is an exception to this pattern of disease?

Fibrous Dysplasia
Ameloblastoma
Odontoma
Radicular Cyst

A

Fibrous Dysplasia

27
Q

Which of the following statements is not an accurate radiographic interpretation?

A lesion that has well defined borders must be corticated.
A multilocular radiolucent lesion is unlikely a cyst
A lesion with an epicenter above the IDN suggests it may have odontogenic origins
Ill defined borders suggests lesion is likely malignant

A

A lesion that has well defined borders must be corticated.

28
Q

Using the mnemonic LESION, which of the following is not congruent with typical radiographic features of a malignant lesion?

Edges: Corticated and well-defined borders
Internal contents: Radiolucent internal structure
Other structures: involvement of IDN canal and loss of canal’s cortical borders.
Shape: Irregularly-shaped

A

Edges: Corticated and well-defined borders

29
Q

Which of the following internal contents have been wrongly matched to their respective lesions?

Ameloblastoma: soap bubble appearance
Osteoma: focal internal contents
Odontogenic myxoma: straight septations at right angles to each other
Paget’s disease: ground glass

A

Paget’s disease: ground glass

30
Q

Which of the following condition do not match its radiographic finding?

Fibrous dysplasia: ground glass appearance
Squamous cell carcinoma: regularly shaped
Burkitt lymphoma: floating teeth
Osteoma: focal radiopacity

A

Squamous cell carcinoma: regularly shaped

31
Q

The image shows a radiograph of a benign tumour — ameloblastoma. Which of the following best represents the description of the lesion seen?

Well-defined, non-corticated borders
Ill-defined, corticated borders
Well-defined, corticated borders
Ill-defined, non-corticated borders

A

Well-defined, corticated borders

OMOPOR (17 decks)

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