We report a fourteen member family presenting with an anomaly of the seventh cervical vertebra. The symptoms associate pain and paresthesias, a C8-D1 syndrome or arterial manifestations. The radiologic lesions noticed are bilateral in twelve cases, either cervical ribs or apophysomegaly of the seventh vertebra's transverse process. There is no correlation between the severity of the clinical impairment and the importance of the radiologic image. We insist on the familial character rarely reported in the literature of an anomaly noticed in radiologic practice.