A wild-caught mature female marsh frog (Pelophylax ridibundus) was presented for a left-sided dorsal swelling. No other abnormalities were detected during the examination. Fine-needle aspiration was non-diagnostic. Baseline hematological and biochemical analyses were within normal reference ranges, and medical imaging did not provide further useful information. Surgical exploration under general anesthesia was performed. The swelling was confirmed to be a digestive tract hernia protruding through a breach of the dorsal muscles and coelomic membrane. Reduction of the hernia was made difficult by the presence of multiple adhesions between the herniated tissue and the coelomic membrane, suggesting a relatively chronic lesion. A traumatic cause was hypothesized. One month later, the animal was considered healed and released back into the wild. Hernias in amphibians are poorly reported in the literature and historically are only found ventrally. To the best of our knowledge, this is the first report of a dorsal hernia in a captive or a wild amphibian.
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