Male, 87 years old, with lesion to the head, squamous cell carcinoma. An ulcerated, enhancing mass is evident centered upon the left frontal scalp and subgaleal tissues. This lesion measures up to 38 mm in the transverse plane, up to 54 mm in the sagittal plane, and up to 16 mm in thickness.This lesion does invade the marrow space of the adjacent frontal bone. The inner cortex of the calvarium may be mildly thinned and some places, but no definite evidence of extension beyond the inner cortex is seen. The underlying dura remains thin and enhances normally. No evidence to suggest intracranial tumor extension is seen. No pathologic parenchymal or extra-axial enhancement is detected. Patchy periventricular T2 hyperintensity is evident, likely related to chronic microvascular ischemic disease. No restricted diffusion is seen.There is no evidence to suggest significant intracranial hemorrhage. No abnormal extra-axial fluid collections are detected. Ventricles and sulci are prominent indicating generalized parenchymal volume loss.
An ulcerated tumor of the left frontal scalp is demonstrated compatible with the stated history of squamous cell carcinoma.This lesion does infiltrate the subjacent frontal bone with some thinning of the inner cortex of the calvarium, but no definite tumor extension beyond the inner cortex.No evidence of brain parenchymal metastatic disease is seen.