Analysis of MRI features and associated factors of the pituitary neuroendocrine tumor streaky sign
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View abstract on PubMed
Summary
This summary is machine-generated.The streaky sign on MRI for pituitary neuroendocrine tumors may indicate a dilated sinus or blood vessel. Its direction aligns with tumor expansion, potentially supporting long-distance growth.
Area Of Science
- Radiology
- Neuro-oncology
- Endocrinology
Background
- Pituitary neuroendocrine tumors (PitNETs) are common intracranial neoplasms.
- The
- streaky sign
- on MRI is a newly observed imaging feature in some PitNETs.
Purpose Of The Study
- To analyze the imaging features of PitNETs with the streaky sign.
- To investigate the relationship between the streaky sign's direction and the tumor's optimal expansion direction.
Main Methods
- Retrospective analysis of 237 PitNET patient MR images.
- Definition of the streaky sign: >10 mm high signal on T1WI with enhancement.
- Comparison of 33 patients with streaky signs versus 33 without.
Main Results
- 85 streaky signs were identified.
- Average deviation between streaky sign direction and optimal tumor extension was ~11°.
- Strong positive correlation (r=0.967) between longest streaky sign angle and optimal tumor extension angle.
Conclusions
- The streaky sign may represent a dilated sinus or small blood vessel.
- The streaky sign's direction closely matches the tumor's optimal expansion direction.
- This finding suggests the streaky sign supports long-distance tumor growth.
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