Multidisciplinary care for colorectal cancer brain metastases with headache as initial symptom: A case report and literature review

Figure 2 Whole-body positron emission tomography-computed tomography findings. A: Positron emission tomography-computed tomography showed a hypermetabolic nodule with surrounding edema in the right frontal lobe, consistent with a brain metastasis; B: Whole-body positron emission tomography-computed tomography imaging. The arrow indicates the primary focus, with no evidence of extracranial organ metastasis. The bilateral renal and bladder activity represents physiologic tracer retention. The area of increased uptake in the medial aspect of the left proximal femur is due to muscular inflammation (yellow arrow: Primary tumor lesions in the intestine); C and D: Hypermetabolic primary rectal tumor.