Discal cyst associated with myxoid change and apoptosis of herniated disc materials: a case report.
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.
Okada
Kyoji
K
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
Saito
Hajime
H
Nishida
Jun
J
Miyakoshi
Naohisa
N
Takahashi
Shu
S
Nagasawa
Hiroyuki
H
Suzuki
Norio
N
Chida
Shuichi
S
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