title: Discal cyst associated with myxoid change and apoptosis of herniated disc materials: a case report.
abstract: Discal cyst is a lumbar intraspinal cyst communicating with intervertebral disc, and previously reported series described the wall of these cysts as consisting of dense fibrous connective tissue. We report a 29-year-old Japanese male with discal cyst showing unusual histological features. Clinical symptoms in the current case as well as imaging features including discography were similar to those previously reported.However, the wall of the cyst consisted of disc material with myxoid degeneration. In addition, apoptosis of chondrocytes was diffusely observed in the herniated disc material. The current case was considered a histological variant of discal cyst. Myxoid degeneration of herniated disc material with diffuse apoptotic change of chondrocytes was probably associated with the formation of discal cyst.
authors.affiliation: Department of Orthopedic Surgery, Section of Neuro and Locomotor Science, Akita University School of Medicine, Akita-city, Akita, Japan. cshokada@med.akita-u.ac.jp
authors.forename: Kyoji
authors.initials: K
authors.lastname: Okada
authors.forename: Hajime
authors.initials: H
authors.lastname: Saito
authors.forename: Jun
authors.initials: J
authors.lastname: Nishida
authors.forename: Naohisa
authors.initials: N
authors.lastname: Miyakoshi
authors.forename: Shu
authors.initials: S
authors.lastname: Takahashi
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Nagasawa
authors.forename: Norio
authors.initials: N
authors.lastname: Suzuki
authors.forename: Shuichi
authors.initials: S
authors.lastname: Chida
mesh_terms: D000328:Adult; D017209:Apoptosis; D045888:Ganglion Cysts / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000473:pathology*; D008159:Lumbar Vertebrae; D008279:Magnetic Resonance Imaging; D008297:Male; D012447:Sacrum