Archives: Medical Student Years 1-3

MS-3997

A 35-year-old woman presents with a 2-day history of vision difficulty. She is experiencing peripheral vision loss and feels nauseous and dizzy when attempting to look towards the sides. Two months ago, she had a tingling sensation in her left foot. During physical examination, there is a limitation in adduction of both eyes and nystagmus with lateral gaze. An MRI of the brain is scheduled.

Based on the current clinical presentation and likely diagnosis, what is the expected location of lesions on the MRI scan?

MS-3973

A 19-year-old male is brought to the emergency room following ingestion of a significant quantity of cocaine. He is experiencing excessive sweating and heart palpitations. During the examination, his pupils are found to be dilated and he is exhibiting tachycardia and tachypnea.

From which spinal level do the preganglionic neurons of the system responsible for his symptoms originate?

MS-3975

A 75-year-old woman presents with profuse rectal bleeding leading to hemodynamic instability. Upper GI endoscopy shows no abnormalities, but a mesenteric angiogram reveals a contrast blush in the sigmoid colon region. The radiologist opts for vessel embolization. What is the spinal level at which the vessel exits the aorta?

MS-3979

A 65-year-old male comes to the head and neck clinic for his postoperative check-up following the removal of a tumour from his mouth. He reports experiencing numbness and tingling in the floor of his mouth after the surgery. It is suspected that the sensory nerve to the floor of his mouth may have been affected.

What is the most probable nerve that has been damaged?

MS-3976

An 80-year-old man visits his GP complaining of difficulty swallowing. He has a medical history of a TIA six months ago and underwent a carotid endarterectomy four weeks ago. Although he is recovering well, he has noticed dysphagia since the operation, which is more pronounced with liquids than solids. During the examination, the GP observes that his uvula is deviated to the right.

Which cranial nerve was affected during the carotid endarterectomy?

MS-3977

Which of the following structures suspends the spinal cord in the dural sheath?

MS-3980

A female patient experiences scapular winging after undergoing a Patey mastectomy. What could be the probable reason behind this?

MS-3986

A 50-year-old woman complains of increasing diplopia that worsens as the day progresses. She has been experiencing double vision for a few weeks now, and notes that it is more pronounced in the evenings and absent in the mornings. Upon further inquiry, the patient reports that her diplopia improves after resting her eyes.

What is the most probable diagnosis?

MS-3985

A 47-year-old motorcyclist suffers a tibial fracture and experiences numbness in the web space between their first and second toes. Which nerve is most likely affected?

MS-3972

Which one of the following structures is not closely related to the piriformis muscle?