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Eduardo Fernandez, Roberto Pallini and Giuseppe Talamonti

✓ A patient with a long-recognized asymptomatic lipoma adjacent to the deep radial nerve developed paralysis of this nerve from a compression similar to the sleep palsy, or “Saturday-night palsy,” mechanism.

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Retrograde degeneration of corticospinal axons following transection of the spinal cord in rats

A quantitative study with anterogradely transported horseradish peroxidase

Roberto Pallini, Eduardo Fernandez and Alessandro Sbriccoli

✓ The extent of the retrograde degeneration of corticospinal axons following transection of the spinal cord was studied in rats by labeling corticospinal axons with anterogradely transported horseradish peroxidase injected in the sensorimotor cortex. Axotomized corticospinal axons underwent progressive and continuing retrograde degeneration. In specimens examined 5, 14, 28, and 56 days after trauma, the tips of the transected corticospinal axons were seen to terminate at 181 ± 80 µm, 977 ± 203 µm, 1751 ± 344 µm, and 2559 ± 466 µm (mean ± standard deviation), respectively, from the site of transection. The rate of retrograde degeneration varied according to the interval after spinal cord transection, as follows: 36.2 µm/day during the first 5 days; 88.4 µm/day between 5 and 14 days; 55.3 µm/day between 14 and 28 days; and 28.8 µm/day between 28 and 56 days. These findings may serve as useful parameters for the objective assessment of therapeutic modalities in spinal cord injury research.

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Eduardo Fernandez, Roberto Pallini and Giulio Maira

✓ A simple technique is described for protecting the cornea in patients with peripheral facial nerve palsy while waiting for recovery of nerve function. The application of an adhesive strip to the superior eyelid permits opening and closing of the eye, and provides good protection of the cornea.

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Eduardo Fernandez, Nicola Colavita, Massimo Moschini and Adriano Fileni

✓ A 40-year-old man with a slowly progressive unilateral sclerotic process of the base of the skull developed complete involvement of all cranial nerves on the right. Roentgenograms of the skull are interpreted as fibrous dysplasia, but pathological confirmation is lacking.

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Eduardo Fernandez, Giulio Maira, Alfredo Puca and Andrea Vignati

✓ The authors present a case of multiple brain metastases and an extracranial secondary localization from malignant melanoma. The patient was operated on three times for the intracranial masses and had a 49-month survival with a good quality of life after the first of the three operations. She lived a total of 80 months from the time of diffusion of the primary tumor. The course of malignant melanoma is unpredictable, and long-term survival can be achieved in some cases, even in the presence of multiple brain metastases.

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