Pigmented villonodular synovitis of the zygoapophyseal joint: a case report

Spine
Joshua RovnerNathaniel Tindel

Abstract

Case report of Pigmented Villonodular Synovitis (PVNS) of a lumbar facet joint which presented as an incidental finding of an expansile lytic lesion of the L5 lamina. Exceedingly rare is the case of PVNS affecting the zygoapophyseal (facet) joints of the spine. To our knowledge only 30 cases have to this point been reported. We will discuss clinical presentation, diagnostic workup, treatment, and follow-up of this rare case that was treated at our institution. First described by Jaffe et al in 1941, PVNS is a relatively uncommon benign disorder of unknown etiology that is characterized by progressive synovial proliferation. Benign, but locally aggressive, it is found most commonly in the knee and other large joints. PVNS affecting the zygoapophyseal (facet) joints of the spine is extremely rare, and in our opinion suitable for reporting. The physical examination of this patient showed signs and symptoms that prompted the need for a plain radiographs and subsequently magnetic resonance imaging (MRI). MRI showed evidence of a lesion in the right lamina of L5. After follow-up MRI showed an expanding lesion, and CT scan confirmed the lytic nature of the lesion, it was decided that an excisional biopsy was warranted. RESULTS.: Posto...Continue Reading

Citations

Jun 19, 2014·Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia·Marie RoguskiRon I Riesenburger
May 22, 2010·International Journal of Radiation Oncology, Biology, Physics·Reinhard HeydUNKNOWN German Cooperative Group on Radiotherapy for Benign Diseases
Oct 26, 2013·Case Reports in Orthopedics·Mustafa CeliktasMahir Gulsen
Nov 5, 2014·Journal of Korean Neurosurgical Society·Sung Woon OhWhan Eoh
Sep 18, 2013·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·So Jung KimHaeyoun Kang
May 5, 2016·Neurología : publicación oficial de la Sociedad Española de Neurología·F J Rascón-RamírezS D Kita
Dec 29, 2020·Clinical Case Reports·Ghassen GaderMohamed Badri

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