Fig. 1.

Gross appearance of hypertrophic osteopathy in a free-ranging common dolphin (Delphinus delphis). (A) Lordosis was observed in the caudal vertebral column (arrow), as were tattoo skin lesions (yellow circles). (B) Prominent congestion in the periosteal and associated musculature (arrows) was observed in the caudal vertebral column. (C) Lumbar and caudal vertebrae after cleaning, showing different degrees of irregular periosteal thickening in the spinous and transverse apophysis. The asterisk marks a normal vertebra. From left to right: 12th lumbar vertebra, 5ht caudal vertebra, 18th lumbar vertebra and 6th caudal vertebra. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)