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benign

This tag is associated with 4 posts

Meningioma – On MRI

History: 60 year old female with headaches and dizziness.  This is a case of a meningioma with all of the classic MRI findings, except for location. Meningiomas arise from the arachnoid cap cells of the meninges. They are supratentorial in 90% of the time, which is why this case isn’t entirely a classical. Meningiomas are benign … Continue reading

Pulmonary Hamartoma – Popcorn Calcification

History: 50 year old male with shortness of breath.  This pattern of calcification is commonly referred to as “popcorn” calcification, and is typically seen with hamartomas of the lung. Hamartomas are the most common benign neoplasm in the lung, and comprise about 8% of all lung neoplasms. They are typically calcified, well circumscribed, and less … Continue reading

Fetal Origin of the Posterior Cerebral Artery – My Brain MRI

History: Radiology resident being scanned for a physics lesson has an incidental finding.  This is my brain MRI! The finding is called a fetal origin of the posterior cerebral artery, and it occurs when the embryonic form of the posterior cerebral artery fails to regress. It is a normal variant that occurs on either side … Continue reading

Scrotal Fibrous Pseudotumor

History: 55 year old male with incidental lump in his scrotum.  The imaging here is essentially diagnostic of scrotal fibrous pseudotumor, particularly, the marked hypointensity on T2W MR imaging. A scrotal fibrous pseudotumor typically arises from the tunica albuginea or vaginalis and can break free to form a “scrotal mouse.”