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Schwannoma of the Posterior Tibial Nerve: An Unusual Finding during Arterial Ultrasound Examination of the Lower Extremities

Schwannoma of the Posterior Tibial Nerve: An Unusual Finding during Arterial Ultrasound... IntroductionUltrasound examination of the lower extremity, regardless of the motive, can yield a considerable amount of data essential to the diagnosis of various diseases.Case ReportWe reported a clinical case of a woman, 50 years of age, who was sent to our vascular laboratory for arterial ultrasound examination of the lower extremities. She complained of coldness of the left foot associated with paresthesia and hypersensitivity of the middle third of the left lower leg for the past 3 years. During physical examination, there was a diminished, but palpable, posterior tibial artery pulse. The ultrasound performed revealed a tumor of the posterior tibial nerve, with 4 cm in longitudinal dimension and 2.7 cm of maximum diameter, typical of a neurofibroma or a schwannoma, with anterior deviation of the vascular structures. She was referred to a plastic surgeon and submitted to surgical resection of the nerve sheath tumor, with preservation of artery and venous flow. Histological analysis revealed a capsulated mass with fusiform cells, without atypical cells, compatible with a schwannoma. Patient completed 1 year of follow-up, maintaining a slight, nondisabling, local hypersensitivity.DiscussionThis clinical case shows an interesting imaging finding, with major repercussions in the treatment of this patient. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal for Vascular Ultrasound SAGE

Schwannoma of the Posterior Tibial Nerve: An Unusual Finding during Arterial Ultrasound Examination of the Lower Extremities

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Publisher
SAGE
Copyright
© 2011 Society for Vascular Ultrasound
ISSN
1544-3167
eISSN
1544-3175
DOI
10.1177/154431671103500105
Publisher site
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Abstract

IntroductionUltrasound examination of the lower extremity, regardless of the motive, can yield a considerable amount of data essential to the diagnosis of various diseases.Case ReportWe reported a clinical case of a woman, 50 years of age, who was sent to our vascular laboratory for arterial ultrasound examination of the lower extremities. She complained of coldness of the left foot associated with paresthesia and hypersensitivity of the middle third of the left lower leg for the past 3 years. During physical examination, there was a diminished, but palpable, posterior tibial artery pulse. The ultrasound performed revealed a tumor of the posterior tibial nerve, with 4 cm in longitudinal dimension and 2.7 cm of maximum diameter, typical of a neurofibroma or a schwannoma, with anterior deviation of the vascular structures. She was referred to a plastic surgeon and submitted to surgical resection of the nerve sheath tumor, with preservation of artery and venous flow. Histological analysis revealed a capsulated mass with fusiform cells, without atypical cells, compatible with a schwannoma. Patient completed 1 year of follow-up, maintaining a slight, nondisabling, local hypersensitivity.DiscussionThis clinical case shows an interesting imaging finding, with major repercussions in the treatment of this patient.

Journal

Journal for Vascular Ultrasound – SAGE

Published: Mar 1, 2011

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