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F Pistoia

Publications and source records attributed to F Pistoia.

9 recordsLinked to original sources
PubMed1987

Ball-and-socket ankle joint.

The ball-and-socket ankle joint is a malformation of the ankle in which the articular surface of the talus is hemispherical in both the anteroposterior and lateral projections and has a congruent, concave tibial articular surface. Fourteen patients with this condition were identified retrospectively. Thirteen patients were thought to have the congenital type of ball-and-socket ankle joint which in many was associated with tarsal coalition, short limb, and ray fusion and deletion anomalies. One case of the acquired type, demonstrating less geometric rounding of the talar margins, was seen in a patient with myelomeningocele, probably resulting from sensory and motor deficits. Although the exact etiology of the congenital type is unknown, its association with other malformations suggests that the ball-and-socket ankle joint results from an overall maldevelopment of the ankle and foot.

Adolescent↗
PubMedDate not supplied

Contrast material in posterior vaginal fornix mimicking bladder rupture: CT features.

Abdominopelvic CT of a 22-year-old woman who sustained blunt abdominal trauma revealed a collection of contrast material posterior to the bladder. This CT appearance was interpreted as evidence of bladder rupture, despite previously performed normal retrograde cystography. Subsequent urologic studies confirmed the absence of bladder injury. Retrospective review of CT revealed that collection was within the vagina. This case demonstrates an important false-positive CT diagnosis of bladder rupture and confirms the importance of retrograde cystography for the diagnosis of bladder rupture.

Adult↗
PubMedDate not supplied

The role of xenon CT measurements of cerebral blood flow in the clinical determination of brain death.

The demonstration of absent blood flow to the brain is often used as a confirmatory test of brain death. Traditionally, cerebral angiography and dynamic radionuclide brain scanning have been used for this purpose. Recently, xenon CT cerebral blood flow techniques have been developed and applied to a wide variety of clinical problems, including the confirmation of brain death. We report our experience with xenon CT studies performed over a 7-year period (1983-1989) in 30 patients with brain injuries. These patients met clinical criteria for brain death within 24 hr of the study. Twenty patients had average global flow values of less than 5 ml/100 ml/min. Seven patients demonstrated mixed flow patterns, whereby large areas of brain showed flow values of less than 5 ml/100 ml/min and residual pockets of flow greater than 5 ml/100/ml/min. Globally symmetric normal to hyperemic flows were seen in three patients. Our study suggests that the demonstration of average global flows of less than 5/ml/100 ml/min is confirmatory of brain death. Demonstration of persistent flow to the entire brain or regions of the brain is not diagnostic of brain death but also does not exclude such an outcome in patients with severe brain injuries. Xenon-derived flow information may be clinically useful in determining the patient's prognosis and in counseling the patient's family.

Adolescent↗