Fig. 5.

Pathology findings in the stomach (A–C) and skin (D) of a free-ranging common dolphin (Delphinus delphis) with hypertrophic osteopathy. (A) The saccular forestomach was occupied completely by nematodes, identified as Anisakis simplex sensu lato, and an ulcer (arrow) was observed. (B) The saccular forestomach tissue after hematoxylin-eosin staining showed signs of parasitic granulomatous gastritis and myositis, as well as an ulcer with loss of the stratified squamous epithelial layer (arrowhead) and intralesional nematodes (arrow). (C) Parasitic granulomatous gastritis: detail of a parasitic granuloma made up of lymphocytes, macrophages, epithelioid cells and multinucleated giant cells (arrows). Hematoxyin-eosin stain. (D) Skin, stratum intermedium. Tattoo skin disease: hydropic keratinocyte degeneration was observed, as well as eosinophilic intracytoplasmic inclusion bodies (arrow) within infected cells. Hematoxyin-eosin stain. Inset, gross appearance of tattoo skin lesion.