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Biomedical subjects

C S Sherry

Publications and source records attributed to C S Sherry.

6 recordsLinked to original sources
PubMed1998

High-output heart failure due to a renal arteriovenous fistula in a pregnant woman with suspected preeclampsia.

A 29-year-old nulliparous woman had development of hypertension, proteinuria, and congestive heart failure during the third trimester of her pregnancy. Her symptoms and cardiovascular changes were consistent with congestive heart failure and severe preeclampsia. The underlying pathophysiology was believed to be caused by the high-output state of pregnancy and by the increased peripheral vascular resistance of preeclampsia. The patient underwent an elective cesarean section, but her cardiovascular symptoms did not resolve. Soon after delivery, the patient was found to have an arteriovenous fistula of the right renal artery that caused the high-output cardiac state. Embolization and surgical removal of the arteriovenous fistula resulted in complete resolution of the patient's high-output heart failure. All previously reported cases of renal arteriovenous fistulas and malformations that have occurred during pregnancy are reviewed.

Adult↗
PubMed1994

Chondroblastoma: classic and confusing appearance at MR imaging.

PURPOSE: To define the characteristics of chondroblastoma at magnetic resonance (MR) imaging and the combination of findings that are diagnostic for chondroblastoma. MATERIALS AND METHODS: From January 1987 through December 1992, 22 patients with histologically confirmed chondroblastoma and prior MR imaging examinations were seen. Patients included 16 men and six women, aged 10-58 years (median, 17 years). Retrospective analysis of findings at MR imaging, plain radiography, computed tomography, and bone scanning was performed. RESULTS: Low to intermediate heterogeneous signal intensity, lobular internal architecture, and fine lobular margins were well defined with high-resolution T2-weighted (repetition time > or = 1,500 msec, echo time > or = 70 msec) MR imaging. Adjacent bone-marrow and soft-tissue edema and periosteal reactions were more dramatically demonstrated on MR images than on radiographs. Bone marrow edema was prominent in all but five cases. Obvious periosteal reaction and adjacent soft-tissue edema were visible in 17 cases. CONCLUSION: Knowledge of the MR imaging findings of chondroblastoma will allow accurate diagnosis and help avoid confusion with infection and aggressive neoplasms.

Adolescent↗
PubMedDate not supplied

MR evaluation of giant cell tumors of the tendon sheath.

Giant cell tumor of the tendon sheath (GCTTS) is a benign condition that involves the synovium of the tendon sheaths. Histologically, GCTTS is similar to pigmented villonodular synovitis. The MRI findings in two cases of GCTTS are reported. In both cases, predominantly low signal is seen on T1-weighted, proton density weighted, and T2-weighted images. This information may be useful in distinguishing GCTTS from other mass lesions involving the tendon sheaths.

Adult↗
PubMedDate not supplied

MR imaging of pseudoaneurysms in aortocoronary bypass graft.

Aneurysm formation may complicate aortocoronary saphenous vein bypass grafts. Because of multiplanar imaging capabilities and the potential for flow evaluation, magnetic resonance (MR) is useful as a noninvasive diagnostic technique. Two cases of pseudoaneurysm formation were evaluated by MR and demonstrate the clinical value of this modality.

Aged↗
PubMedDate not supplied

Spinal MR imaging: multiplanar representation from a single high resolution 3D acquisition.

Evaluation of spinal disorders by magnetic resonance (MR) imaging is facilitated by the availability of images in multiple angles and views. Imaging in multiple angles is practically limited, however, by clinically prohibitive scan times, if separate acquisitions are necessary for each angle. Thin slices (0.8 mm) without interslice gaps are acquired with a three-dimensional (3D) acquisition. Images with high anatomical detail are rapidly derived from the single 3D data set in any desired plane without repeating the scan. High quality MR images in multiple planes improve the diagnostic capability of MR for many spinal abnormalities. This technique is demonstrated in a series of 11 subjects.

Humans↗