Vertebral foramen anteroposterior width: The maximum anteroposterior length of vertebral canal
or foramen vertebrae at the midline (Sengul & Kadioglu, 2006; Gosavi & Vatsalaswamy, 2012).
The spinal cord occupies the vertebral canal
within the vertebral column, which provides support and protection.
Symptoms probably appeared because of progressively narrowing vertebral canal
due to degeneration .
A single mineralized 4mm fragment was located within the vertebral canal
at the level of T2-T3 (Figure 2).
X-ray and computed tomography (CT) images demonstrated an L1 vertebral burst fracture without compression of the related vertebral canal
. Magnetic resonance imaging demonstrated a high signal change in the L1 vertebra.
Changes in the number and shape of the vertebrae contribute to the abnormal curvature of the spinal axis and to varying degrees of vertebral canal
stenosis (Falzone, 2011; Moissonnier et al., 2011; Walker, 2002; Westworth and Sturges, 2010) followed by neurological manifestations.
The neurological symptoms were ascribed to the compression of the spinal cord and nerve roots by an expanding mass partly protruding into the vertebral canal
(Figures 1(c) and 1(d)).
The most frequent complications are myelopathy and radiculopathy which occur because of mechanical compression of the vertebral canal
[3, 4] and dysphagia, caused by mechanical compression of the esophagus [5-15].
There was no extension of osseous growth into vertebral canal
and over nearby sacral foramina.
sagittal diameter was enlarged from an average of 5.7 [+ or -] 1.6 to 15.2 [+ or -] 1.2 mm (P<0.01).
The spine was sectioned sagittally after formalin fixation such that the vertebral canal
and spinal cord could be examined.
On rare occasions, the metastatic tissue invades the vertebral canal
without causing damage to the vertebral bodies (RAMADAN et al., 2012), as was observed in these two cases.