A. Ultrasonography of the left thorax documenting a hypoechogenic nodule in the context of the intercostal muscle, close to the underlying rib. The nodule shows intralesional vessels at Color Doppler examination. B. T1-weighted MRI showing the presence of a moderate gadolinium-contrast enhancement area in the intercostal muscle adjacent to the rib. C. FDG-PET/CT scan documenting two focuses of abnormal FDG uptake in the left hemithorax. D. Recurrence of squamous cell cervical carcinoma in the rib cage muscle. The bands of skeletal muscle are separated and infiltrated by nests of squamous carcinoma cells surrounded by desmoplasic stroma and showing areas of keratinisation. (Hematoxylin & Eosin, magnification 100×).