PMC4891585_01
99mTc radionuclide bone scan shows mild uptake in the right humeral head. A small focus of uptake in the area of the right knee likely represents focal osteoarthritis. [Powerpoint Slide]
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A 99mTc radionuclide bone scan (Figure 1) demonstrated mild uptake in the right humeral head.
Plain radiograph of right shoulder was read as normal. In retrospect, a faint area of sclerosis is barely visible in the inferomedial humeral head, corresponding to the area of the abnormality seen on subsequent cross-sectional imaging. [Powerpoint Slide]
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A plain radiograph of the shoulder (Figure 2) was initially read as normal and notably demonstrated no signs of arthropathy.
T1-weighted coronal image demonstrates focus of low signal intensity involving the medial humeral head and its surgical neck. [Powerpoint Slide]
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This focus was of low signal intensity on T1-weighted images (Figure 3) and on T2-weighted images (Figure 4).
T2-weighted coronal image of the right shoulder demonstrates a focus of signal abnormality hypointense with respect to the other marrow. Within this area of hypointense signal is a central area that is isointense with normal marrow. [Powerpoint Slide]
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This focus was of low signal intensity on T1-weighted images (Figure 3) and on T2-weighted images (Figure 4).
Axial fat-saturated proton density image demonstrates a high signal intensity focus within the marrow with no interruption of the cortex. There is also a small joint effusion. [Powerpoint Slide]
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On proton density (Figure 5) and short tau inversion recovery (STIR) images (Figure 6), the mass was of higher signal intensity than the surrounding low signal intensity marrow.
Coronal (STIR) image demonstrates a high signal intensity focus within the marrow with no interruption of the cortex. There is also a very small joint effusion. [Powerpoint Slide]
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On proton density (Figure 5) and short tau inversion recovery (STIR) images (Figure 6), the mass was of higher signal intensity than the surrounding low signal intensity marrow.
Oblique coronal reformation of CT scan of right shoulder demonstrates ill-defined sclerosis in the humeral head in the same region as the signal abnormality seen on MRI. No break is seen in the cortex. [Powerpoint Slide]
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