PMC10152961_01
Chest X-ray posterior anterior view showing nodular sclerotic lesion near 6th rib right side (a), the lesion is mostly lytic with ground-glass matrix and cortical thinning with smooth margin, without any soft-tissue involvement (b), and the excised rib with tumour (c and d).
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F1
The chest X-ray examination showed a nodular, hyperdense lesion on the lateral chest wall near the 5-7th rib on the right side (Fig. 1a). The lesion was confirmed to be 4.4 x 3.9 x 2.7 cm, arising from the sixth rib with ground-glass matrix and cortical thinning with smooth margin, without any soft-tissue involvement on the computed tomography scan (Fig. 1b). After taking informed consent, enblock excision of the lesion was done (Fig. 1c and d), and excised part was sent for histopathological examination.
Hematoxylin and eosin staining x100 magnification shows a well circumscribed tumor with reactive bone formation at periphery (a), lobules of chondromyxoid tissue separated by spindle cells (b), hematoxylin and eosin staining x400 magnification showing chondromyxoid nodule show few spindles to stellate shaped cell (c), and the intervening spindle cell show monomorphic oval to spindle nuclei without any atypia, mitosis or necrosis (d).
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F2
The histopathological study showed a well-circumscribed tumor with reactive bone formation at the periphery (Fig. 2a) with lobules of chondromyxoid tissue separated by spindle cells (Fig. 2b) and stellate-shaped cells (Fig. 2c). The intervening spindle cell showed monomorphic oval to spindle nuclei without any atypia, mitosis, or necrosis (Fig. 2d).