Differential
Reading File
The CT report shows a 75-year-old female (Patient: GYANMATI) with the following NCCT Brain findings. Here is the clinical differential diagnosis based on the imaging impression:
CT Brain Report Summary
Patient: GYANMATI | 75Y/F | Date: 06/04/2026
Study: NCCT Brain (Non-Contrast CT)
Imaging Findings
| Finding | Detail |
|---|---|
| Left ganglio-thalamic bleed/contusion | 25×18 mm intraparenchymal hemorrhage with mild perifocal edema, extending into left lateral ventricle |
| Right parietotemporal scalp hematoma | External soft tissue injury |
| Periventricular/white matter hypodensity | Bilateral, chronic small vessel ischemic changes |
| Prominent ventricles & CSF spaces | Diffuse cerebral atrophy |
| No midline shift | Structurally stable |
| Normal basal ganglia (right), cerebellum, brainstem, skull | — |
Differential Diagnosis
1. Hypertensive Intracerebral Hemorrhage (Most Likely)
- The ganglio-thalamic location is the single most common site for hypertensive bleed (~60% of all ICH)
- Classic presentation in elderly with background small vessel disease (periventricular white matter changes support longstanding HTN)
- Typically spontaneous, without underlying structural lesion
2. Hemorrhagic Contusion (Traumatic)
- The scalp hematoma on the right (coup-contrecoup mechanism) suggests a traumatic etiology — the left ganglio-thalamic bleed could represent a traumatic contusion
- In elderly patients, even minor falls cause significant intracranial injury due to cerebral atrophy (larger subdural space, bridging veins under tension)
- Contrecoup injury to the left hemisphere from a right-sided impact is consistent
3. Hemorrhagic Transformation of Ischemic Stroke
- Background chronic small vessel disease (leukoaraiosis on CT) raises the risk of prior lacunar infarcts
- An acute ischemic event in the ganglio-thalamic territory (perforators from MCA/lenticulostriate) could have undergone hemorrhagic conversion
- Less likely without prior imaging for comparison, but must be considered
4. Cerebral Amyloid Angiopathy (CAA)
- Age >70, lobar/deep hemorrhages, and white matter changes can suggest CAA
- Typically lobar rather than ganglio-thalamic; HTN-related ICH more common at this location
- Lower probability here but warrants MRI (GRE/SWI sequences) to look for microbleeds
5. Underlying Structural Lesion (Bleed into Tumor/AVM)
- Must be excluded, particularly if no clear trauma or HTN history
- Perifocal edema out of proportion to bleed size, or atypical enhancement pattern on contrast CT/MRI, would raise suspicion
- Less likely in this age group compared to metastasis, but glioblastoma cannot be ruled out on NCCT alone
Most Probable Diagnosis
Given:
- Age (75F)
- Location (ganglio-thalamic — classic HTN site)
- Background leukoaraiosis (chronic HTN/SVD)
- Scalp hematoma (possible fall precipitated by the bleed OR fall caused the bleed)
Primary: Hypertensive ICH with possible superimposed traumatic component
Secondary consideration: Traumatic hemorrhagic contusion
Recommended Next Steps
| Priority | Action |
|---|---|
| Urgent | Neurosurgery consult — 25×18mm bleed with IVH (intraventricular extension) |
| BP control | Target SBP <140 mmHg (AHA guideline for acute ICH) |
| Coagulation | Check PT/INR, aPTT, platelet count — reverse any anticoagulation |
| MRI Brain (SWI/GRE) | After stabilization — exclude tumor, CAA microbleeds |
| Repeat NCCT at 6–24h | Monitor for hematoma expansion |
| Fall precautions + GCS monitoring | Ongoing neurological assessment |
Clinical correlation is mandatory as noted on the report. The scalp hematoma raises the question of whether this was a spontaneous hypertensive bleed causing a fall, or a fall causing traumatic hemorrhage — this distinction has significant management implications.
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