Biomedical subjects
Publications and source records attributed to A E Pearlstein.
Three cases of surgically proven benign renal cysts are presented that demonstrated high density on computed tomography. The lesions shared the common characteristics of hyperdensity, nonenhancement with intravenous contrast material, round shape, and sharp margination. It is suggested that these criteria may indicate that such lesions are potentially benign, which may prompt a more conservative surgical approach.
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We report a case of a testicle retracted by the cremasteric reflex in response to cold that presented as an inguinal mass, which could easily have been misinterpreted as lymphomatous recurrence.
The magnetic resonance characteristics of 16 intracranial arachnoid cysts were evaluated and several features identified that allowed the differentiation from other cystic lesions. Uncomplicated arachnoid cyst contents respond like CSF to both T1 and T2 weighted sequences. Signal from the contiguous brain is of normal intensity. The absence of signal from cortical bone and the ease of obtaining multiplanar views enable the margins of the cyst, its contents, and the full extent of the lesion to be easily defined.
Methoxyflurane, a general anesthetic, is a known nephrotoxin. A case is presented that demonstrated diffuse, bilateral renal cortical calcification on CT secondary to repeated methoxyflurane inhalation.
From sagittal magnetic resonance (MR) images with 10 mm slice thickness, the mean vertical height of the pituitary gland in 42 normal patients was found to be 5.4 +/- 0.9 mm. Computed tomographic (CT) scans in the coronal plane showed the same. Measurements of pituitary size in 13 patients with tumors using both CT and MR were also essentially equivalent. The ease, comfort, and accuracy of the MR pituitary measurement supports its use as the examination of choice for measuring pituitary height.