The 71 year old patient in your office has had progressive imbalance and falls

She has brisk reflexes on exam, so you order an MRI. Results below (T2 left, T1 with contrast right)

What’s going on here?? What is your next move for this patient? #ContinuumCase

A 77 year old woman comes in following a seizure. Her imaging shows a nonenhancing T2 hyperintense right medial temporal lesion

Biopsy shows mild hypercellularity suspicious for low grade glioma

What next? Hint: you might’ve done something different just a few years ago The patient is otherwise healthy and lives independently. She has a normal neurologic exam and is tolerating her antiseizure medication

What do you do next in this #ContinuumCase?

A 39 year old woman with relapsed, refractory B-cell lymphoma undergoes CAR T-cell therapy

On day 5: mild fever and headache

On day 14: somnolent, then unresponsive. CT below

You’re the neurologist on call.

What do you see?
What’s going on?
What do you do? Patients undergoing CAR T therapy are medically complex: underlying malignancy, conditioning chemotherapy, risk of infection, and the treatment itself

Differential for encephalopathy in these patients is broad: metabolic, infectious, and other causes

What about the CT?

A 24 year old man had progressive painless weakness and numbness over 4 months

EMG: Demyelinating polyradiculoneuropathy
CSF: protein 398, no cells

✅ Diagnosis: CIDP. Started IVIG and steroids. Mission accomplished.

Here’s the problem: he didn’t get better

A #ContinuumCase You take a closer look.

On exam he has diffuse weakness, length-dependent sensory loss, and areflexia

You review his electrophysiology. Moderate slowing of velocities + conduction block (74% block of amplitude on this tibial motor study⬇️)

All still fits CIDP

The 62 year old man in your office clearly doesn’t want to be there. “My family made me come in.”

After working outside on a hot day, he had a brief loss of consciousness. Neuro exam showed mild sensory loss in his feet. ECG below

How would you approach this #ContinuumCase?🧵 More about the spell: he felt lightheaded beforehand, no abnormal movements, and immediately returned to normal thereafter. He has occasional brief lightheadedness on standing

He has a history of coronary disease, treated hypertension, and diabetes

What’s your next move?

A 75 year old woman comes to the ED with 3 days of low back pain, imbalance, and tingly feet

She has diabetes and melanoma. “I just finished my first round of chemo last week!”

She has moderate lower limb weakness & absent reflexes

How would you approach this #ContinuumCase?🧵 New spine pain and neurologic deficit in the setting of active malignancy is an emergency!

Fortunately, her spine MRI showed no sign of cord or cauda equina compression. So what’s going on here?

Let’s think it through

A 48 year old woman comes to clinic with her teenage children. The reason:

“Mom wakes up screaming at night, and it scares us.”

What do you do next for this patient?

A things-that-go-bump-in-the-night #ContinuumCase🧵 The episodes occur several times per week and consist of screaming, sitting up in bed, followed by confusion. Once, she ran from the room.

She appears frightened during the events, and has a vague sense of recall for being chased.

Her neurologic exam is normal.

What’s next?

A 52 year old woman comes in for evaluation of daily headaches. They’ve been present for about 2 years, occur on awakening, and resolve after her morning coffee.

Her neurologic exam is completely normal.

What do you do next for this patient?🧵#ContinuumCase She has a history of migraine and mild hypertension. She’s a light snorer, and gets up 3x a night for the bathroom. She does not have excessive daytime sleepiness, and she has no systemic symptoms (eg weight loss) but she is fatigued

Which of the following will you recommend?

Because you read Continuum and follow #ContinuumCases, your reputation as a neurologic detective has grown.

You get paged with a curbside:

MICU: “Hi, neurology, we have a diabetic patient with uncontrolled movements, we’re worried he’s in status and…”

You: “I’m on my way.” At the bedside you see a 57 year old man who is drowsy but oriented following IV lorazepam and levetiracetam. He has low-amplitude writhing movements of all limbs.

After reviewing his MR (non-con T1), which blood test are you most interested in obtaining?

A 47 year old woman developed imbalance and falls 1 year after gastric bypass surgery. Good diet and takes a vitamin. Her cervical MRI is below

Here’s the twist: serum B12, ceruloplasmin, folate, and urine copper were all NORMAL. What’s going on here?! #ContinuumCase Her exam showed severe proprioceptive sensory loss and gait ataxia, so the “inverted V” T2 hyperintensity in the dorsal columns is no surprise. Another clue: her EMG showed an axonal peripheral neuropathy

What next?

A #ContinuumCase conundrum:

A 52 year old develops abrupt left face and arm weakness. DWI below

The case seems straightforward until you notice on exam, in addition to somnolence and left hemiparesis, he has bleeding gums…

Time to solve a mystery, #neurotwitter!🧵on 🧠&🩸 First the imaging: his DWI shows an acute right hemispheric ischemic cerebral infarction. SWI shows a convexal subarachnoid hemorrhage, and subcortical microhemorrhages

What next?

#ContinuumCase!

A 48 year old is found unresponsive by her family. She was intubated for respiratory depression with no response to naloxone. She was comatose with intact brainstem reflexes

Urine drug screen was negative. MRI below (DWI⬆️/FLAIR⬇️)

What’s the diagnosis???🧵 The MRI shows restricted diffusion and T2 hyperintensity in the cerebellum, temporal lobe, and basal ganglia.

A few possibilities here, what do you think is most likely?

#ContinuumCase, plot twist edition:

A 28 year old PGY2 neurology resident is asked by her attending to review 2 scans and determine the diagnosis: Alzheimer disease (AD) or dementia with Lewy bodies (DLB).

What should she say, #neurotwitter?🧵 How would you respond?

Throwback #ContinuumCase!

A 59 year old developed slowly progressive imbalance and falls. Exam showed a mild spastic quadriparesis.

Cervical T2 and post-contrast T1 MR below. What’s the diagnosis, #neurotwitter?🧵 What treatment would you recommend for this patient?

#ContinuumCase!

A 56 year-old developed progressive imbalance and dream enactment behavior. On exam he had an ataxic dysarthria and prominent limb dysmetria

In addition to cerebellar atrophy on his brain MR, you notice a subtle abnormality. What’s going on, #neurotwitter? 🧵 Which of the following diagnoses are associated with the “hot cross bun” sign on MRI?

#ContinuumCase!

A 71 year old has had 18 months of frequent falls

While eating, he leaves food on the closest part of the plate

His exam shows slow saccades, limb dyspraxia, and axial rigidity

Sagittal T1 MR below. What’s going on here, #neurotwitter? 🧵 What’s the most likely diagnosis in this patient?

⬇️@ContinuumAAN Case:

A 41 year old man had 4 days of pain and severe right vision loss. Exam showed a right APD and normal eye movments. Fundoscopy and contrasted T1 below.

He recovered well after IV steroids. What’s going on, #neurotwitter? Poll in 🧵 What is the most likely diagnosis in this patient?

Time to solve this case, #neurotwitter

➡️ What’s going on?
➡️ How do these images solve the mystery for this patient?
➡️ Why is ALS the wrong diagnosis? 1/9

https://twitter.com/LyellJ/status/1542173624706207744

As always, start with the patient:

➡️ Lower motor neuron signs in upper limbs (atrophy, fasciculations)
➡️ Upper motor neuron signs below (brisk reflexes)
➡️ Could it be a diffuse process like ALS? Sure, but a cervical cord lesion fits too
➡️ Chronic + Focal = Degenerative? 2/9

Solving the Case of the Vanishing Leg:

“My right leg is disappearing.”

➡️ 48 years old
➡️ Whole right lower limb weakness, atrophy
➡️ Progressive
➡️ Painless

What’s going on? 🧵1/8 As always, start with the patient (before the data). Where does this localize?

Weakness and atrophy often localize to nerve (motor neuron especially when no sensory symptoms)

➡️ BUT, some asymmetric myopathies can present similarly

Simple rubric to localize weakness: 2/8

https://twitter.com/LyellJ/status/1392906522594848768

How to Muscle Twitches:

To mark the new academic year, a special July 1 edition celebrating all those muscle twitches out there today #medtwitter #neurotwitter Myoclonus:

Brief, lightning-quick muscle contractions (or, brief pause of contraction ➡ asterixis)

Usually generated in UMN >>> LMN
Many causes: epileptic, neurodegenerative, toxic (opioids), physiologic

July 1: look out for hypnic myoclonus (sleep jerks) on hour 6 of rounds

How to Quality:

Delivering high value care to patients has to start with an understanding of quality of care. Extremely proud of this team’s first report of quality of neurologic care in the US, using Axon Registry data @AANMember @GreenJournal 1/
n.neurology.org/content/early/… This analysis is the culmination of years of development, millions of patient encounters, and hundreds of neurologist and staff volunteers dedicated to high quality care.

But it still represents an early step in improving outcomes 2/