✅ The anterior pituitary may show T1↑ like the posterior, mimicking hemorrhage.

✅ The subthalamic nucleus and globus pallidus show T1↑,

💡 A small subdural hematoma: Associated w/ vaginal delivery.

www.medicalk.net/jspr_journal...

<Lipoma with osseous metaplasia>

CT:
✅ Well-defined mass
✅ Irregular linear ossified components
✅ Low-attenuation fatty background
✅ No continuity with adjacent bone

MRI:
✅ T1: ↑ (fat) + ↓ (bone)
✅ T2: ↑ (fat) + ↓ (bone) + focal ↑ (soft tissue)
✅ No contrast enhancement → Poor vascularity

<Cavernous Hemangiomas in the Cavernous Sinus>

MRI
✅ Strong hyperintensity on T2WI
✅ Homogeneous
✅ Extension from intrasellar to suprasellar
✅ Dumbbell shape

💡 When all 4 findings are present
　⇨ sensitivity 87.5%, specificity 96.3%

PMID: 12812943

✅ Progressive bone resorption (outer skull resorbed, inner layer preserved)
✅ Vascular shaped contrast enhancement within the single lesion on MRI
✅ Asymptomatic, no signs of inflammation

#Rdiag #RadSky #MedSky #NeuroRad #FOAMed
PMID: 32117063

bsky.app/profile/shin...

💡 MRI
✅ T2 diffuse hyperintensity - most sensitive
✅ Serpiginous flow voids - most specific
✅ Conus hyperintensity in 90% of cases
✅ Fistula location often distant from max MRI signal abnormality

#Rdiag #RadSky #MedSky #NeuroRad #FOAMed
doi.org/10.53347/rID...

PMID: 32691295

<Horizontal Gaze Palsy with Progressive Scoliosis（HGPPS）>

✅ Pinhole pons appearance
- pontine hypoplasia, fourth ventricle floor depression
✅ Butterfly medulla
- absent cuneate/gracile nuclei, prominent olivary nuclei
✅ Absent pyramidal decussation and transverse pontine fibers on tractography

<Neuroferritinopathy>

💡 Basal ganglia cystic degeneration in advanced stages

🩻 MRI
T2∗WI: Earliest finding → Marked ↓ signal (iron deposition)
T2WI: ↓ Signal (iron) in early stage, ↑ Edema/Gliosis in middle stage
Atrophy: Frontal lobe, cerebellum

PMID: 21808735

PMID: 24218322

ijms.info/IJMS/article...

Thanks!! Please check my answer post out, if you would like.