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Homogeneous Chronic Subdural Hematoma with Diverse Recurrent Possibilities
Woon-Man Kung1,2, Yao-Chin Wang3,4, Wei-Jung Chen5
1Division of Neurosurgery, Department of Surgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan.
Diagnostics (Basel, Switzerland)
|November 11, 2022
Summary
Hyperdense chronic subdural hematomas (CSDHs) show higher recurrence. Separating homogeneous CSDHs into low-density (LD) and hyperdense (HD) subtypes refines mean hematoma density (MHD) analysis, improving risk assessment.
Area of Science:
- Neurosurgery
- Radiology
- Medical Imaging Analysis
Background:
- Hyperdense (HD) chronic subdural hematomas (CSDHs) are associated with higher recurrence rates compared to hypodense (LD) CSDHs.
- Mean hematoma density (MHD) is a known predictor of postoperative recurrence in CSDH cases.
- Current MHD assessment may underestimate recurrence risk in HD homogeneous CSDH subtypes.
Purpose of the Study:
- To investigate the variability of mean hematoma density (MHD) in different chronic subdural hematoma (CSDH) classifications.
- To evaluate the impact of subdividing homogeneous CSDHs into low-density (LD) and hyperdense (HD) types on MHD quantification.
- To enhance the accuracy of CSDH recurrence risk stratification.
Main Methods:
- Analysis of 42 consecutive chronic subdural hematoma (CSDH) cases.
- Preoperative brain CT scans were used for computer-based image analysis to quantify hematoma area and determine mean hematoma density (MHD).
- CSDHs were initially classified into four types: homogeneous, laminar, separated, and trabecular, then further analyzed by subdividing homogeneous types into LD and HD.
Main Results:
- Homogeneous CSDHs exhibited high variability in MHD levels (95% CI: 11.80-16.88, SD: 4.59).
- Subdividing homogeneous CSDHs into LD and HD subtypes significantly reduced MHD variability (LD SD: 1.15, HD SD: 0.88).
- MHD values showed more concentrated distributions within the five distinct subtypes compared to the four-type classification.
Conclusions:
- Separating homogeneous CSDHs into LD and HD categories can decrease the variability in mean hematoma density (MHD) quantification.
- This refined classification potentially reduces the risk of overlooking high-risk patient groups within the homogeneous CSDH category.
- Improved MHD quantification through subtype differentiation offers a more precise approach to predicting CSDH recurrence.
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