PMC3360430_01
Preoperative CT, MRI and histological images. A. CT scanning showed a round homogenously hypodense lesion with hyperdense signal in the wall. B. Coronal T2 weighted image showed a well-defined homogeneously hyperintense lesion with no surrounding edema. C. Axial T1 contrast weighted image showed enhancement in the capsule. D. The gross appearance of the removed tissue. E. Microscopic image showed bone tissue (arrow head, hematoxylin & eosin, x10). F. Epithelia with keratin under microscope (hematoxylin & eosin, x20).
ijmsv09p0269g01.jpg
PMC3360430_01_ijmsv09p0269g01.jpg
F1
Head CT scanning revealed a round lesion between two frontal lobes, with homogenous hypo-density containing a small region of hyper-density in its rim (Fig. 1 A). In the capsule wall, a little piece of bone-like material was found (Fig. 1 E). Patho-histological examination of the removed tissues demonstrated the lesion contained well differentiated adipose tissue, mature bone and keratin-producing squamous epithelium (Fig. 1 F and G), which were consistent with the diagnosis criteria of a mature teratoma.
Postoperative enhanced MRI showed no residual or recurrence of the teratoma at three years of fellow up. A. Axial image; B. Coronal image; C. Sagittal image.
ijmsv09p0269g02.jpg
PMC3360430_01_ijmsv09p0269g02.jpg
F2
At three years of follow-up, neither neurological deficits nor recurrence signs was found (Fig 2 A, B and C).