La sinovitis villonodular pigmentada afecta con frecuencia a las articulaciones sinoviales del esqueleto apendicular, y es excepcional su presentación en las articulaciones sinoviales de la columna vertebral. Esta entidad presenta características neoplásicas y reactivas, y su etiología se ha relacionado tradicionalmente con traumatismos. En este artículo se describen las características clínicas, radiológicas y anatomopatológicas de una lesión de este tipo localizada en las carillas articulares L4–L5 en una paciente de 53 años de edad, lo que representa posiblemente el undécimo caso de sinovitis villonodular pigmentada originada en la columna vertebral que se publica en la literatura médica.
Pigmented villonodular synovitis commonly occurs in synovial joints of the appendicular skeleton, but rarely affects the synovial joints of the spine. It has both neoplastic and reactive features, and its etiology is thought to be posttraumatic. In this paper we describe the clinical, radiological, and histological features of a case of pigmented villonodular synovitis in a 53-yearold patient. To our knowledge, this is the eleventh case reported in literature.
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