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<What’s your diagnosis?> 👤 16-year-old Female 📋 Seizures #Rdiag #MedEd #RadEd #NeuroRad #FOAMrad #FOAMed

<Dysembryoplastic neuroepithelial tumour (DNET)> #Rdiag 🧩 Imaging Clues - Cortically-based, bubbly/multiloculated T2↑ lesion - No surrounding edema or mass effect - No diffusion restriction or enhancement - “Bright rim sign”: thin rim of FLAIR↑ at the periphery 💎 Pearl DNET

<What’s your diagnosis?> 👤 45-year-old Male 📋 Headache, expressive dysphasia, altered mental status. Fevers, chills, rigors. Recent travel from Uganda. #Rdiag #MedEd #RadEd #NeuroRad #FOAMrad #FOAMed

<Neurotoxoplasmosis> #Rdiag 🧩 Imaging Clue - Multiple ring-enhancing lesions - “Eccentric target sign”: peripheral ring with an eccentric nodule - Significant surrounding edema 💎 Pearl - Neurotoxoplasmosis is the most common CNS opportunistic infection in AIDS patients with

<What’s your diagnosis?> 👤 60s Male (HIV-positive) 📋 Progressive gait instability and dizziness for 2 months. #Rdiag #MedEd #RadEd #NeuroRad #IDRad #FOAMrad #FOAMed

<JC Virus Granule Cell Neuronopathy (JCV-GCN)> #Rdiag 🧩 Imaging Clues - Cerebellar atrophy, particularly of the hemispheres - T2/FLAIR ↑ in cerebellar white matter - No contrast enhancement or mass effect - Diffusion restriction may be absent or subtle 💎 Pearl - JCV-GCN is

<What’s your diagnosis?> 👤 70s Male 📋 Subacute altered mental status in a patient with progressive dysphagia and MSA. #Rdiag #MedEd #RadEd #NeuroRad #FOAMrad #FOAMed

<Wernicke’s Encephalopathy (WE)> #Rdiag 🧩 Imaging Clues - Bilateral cortical ribboning in the frontal lobes (DWI ↑, ADC ↓, FLAIR ↑) - No contrast enhancement - Subtle signal changes in medial thalami 💎 Pearl - Typical MRI findings include symmetrical thalamic &

<What’s your diagnosis?> 👤 65-year-old Female 📋 CT & MRI performed for nonspecific headache. #Rdiag #RadEd #MedEd #NeuroRad #FOAMrad #FOAMed

<Arrested Pneumatisation of the Skull Base> #Rdiag 🧩 Imaging Clues - Well-defined, non-expansile lesion at the skull base - Internal fat density ± curvilinear calcifications - No bone erosion or remodeling - Typically located in the sphenoid or petrous apex - Asymptomatic,

<What’s your diagnosis?> 👤 Adult 📋 Head trauma #Rdiag #MedEd #RadEd #NeuroRad #ERrad #FOAMrad #FOAMed

<Terson Syndrome> #Rdiag 🧩 Imaging Clues - Subarachnoid hemorrhage (SAH) on non-contrast CT - Hyperdensity in one or both globes → intravitreal or subhyaloid hemorrhage - No evidence of orbital trauma 💎 Pearl - Terson synd. refers to intraocular hemorrhage occurring in the

<What’s your diagnosis?> 👤 50s Female 📋 Chronic dry eyes and dry mouth. MRI performed for recurrent parotid swelling. #Rdiag #MedEd #RadEd #FOAMrad #FOAMed

<Sjögren’s Disease> #Rdiag 💡Name update: “Sjögren’s Syndrome” → “Sjögren’s Disease” (Ramos-Casals M, Nat Rev Rheumatol, 2025) 🧩Imaging Clues - Bilateral parotid gland enlargement - Multiple small round cystic areas in T2WI (→ punctate sialectasis) - No significant

<What else do you notice?> 👤 70s Female 📋 Trauma after fall. Right iliac fracture is evident. But… is that all? #Rdiag #MedEd #RadEd #MSKrad #FOAMrad #FOAMed

<Serous Atrophy of Bone Marrow (SABM): Flip-Flop Effect> #Rdiag 🧩 Imaging Clues - T1WI: diffuse low signal in bone marrow - STIR: corresponding high signal (→ “flip-flop” effect) - Non-traumatic areas also show signal change 💎 Pearl - SABM reflects marrow fat loss &

<What’s your diagnosis?> 👤 2-year-old Female 📋 Head trauma #Rdiag #RadEd #MedEd #PedsRad #NeuroRad #FOAMrad

<Ping-Pong Skull Fracture> #Rdiag 🧩 Imaging Clues - Smooth, focal depression of the calvarium - No fracture line or bony discontinuity - Most often seen in neonates or infants due to pliable skull 💎 Pearl - A ping-pong skull fracture is a type of greenstick fracture seen in