PMC4727162_01
Roentgenogram showing lytic skeletal lesions in the diaphysis of the femur, without periosteal reaction (arrows).
mco-04-01-0031-g00.jpg
PMC4727162_01_mco-04-01-0031-g00.jpg
f1-mco-0-0-650
A right thigh roentgenogram was performed, revealing lytic skeletal lesions of the femur, without periosteal reaction (Fig. 1).
Combined 18F-fluoro-2-deoxy-D-glucose (18F-FDG) positron emission tomography/computed tomography imaging revealed several areas with mildly to greatly increased 18F-FDG uptake in the humerus bilaterally, the right scapula and the right femur (arrows).
mco-04-01-0031-g01.jpg
PMC4727162_01_mco-04-01-0031-g01.jpg
f2-mco-0-0-650
Variable degrees of 18F-FDG uptake were observed in the humerus bilaterally, the right scapula and the right femur (Fig. 2).
Roentgenogram following curettage of the tumor, filling of the bone defect with bone cement and fixing with intramedullary nails.
mco-04-01-0031-g02.jpg
PMC4727162_01_mco-04-01-0031-g02.jpg
f3-mco-0-0-650
With a suspected diagnosis of metastasis from colon adenocarcinoma with pathological fracture, palliative surgery was performed by curetting the tumor, filling the bone defect with bone cement and fixing with intramedullary nails to improve life quality (Fig. 3).
Histopathological examination of the right femur lesion revealed atypical plasma cells (hematoxylin and eosin staining; magnification, x400).
mco-04-01-0031-g03.jpg
PMC4727162_01_mco-04-01-0031-g03.jpg
f4-mco-0-0-650
A biopsy of the focal lesion was performed intraoperatively, revealing large clusters of plasma cells and no evidence of metastatic adenocarcinoma of the colon (Fig. 4).