Rare imaging case links Addisonian crisis to vena caval hematoma

A new case report in Veterinary Radiology & Ultrasound describes what the authors say is the first documented dog with imaging evidence of a vena caval hematoma secondary to adrenal hemorrhage during an Addisonian crisis. The patient, an 11-year-old spayed female American Staffordshire Terrier, presented in crisis with adrenal hemorrhage and extension into the vena cava; follow-up imaging one year later showed the adrenal mass had resolved, with bilateral adrenal atrophy remaining. The report adds a rare imaging-backed presentation to the veterinary literature on canine hypoadrenocorticism and adrenal injury. (lifescience.net)

Why it matters: For veterinary professionals, the case is a reminder that an adrenal-associated mass or caval lesion in a dog with suspected hypoadrenocorticism may not always represent neoplasia or thrombus alone. Prior veterinary literature has described nontraumatic adrenal hemorrhage preceding hypoadrenocorticism, but this report appears to be the first to document adrenal hemorrhage with vena caval involvement on imaging in an Addisonian crisis, which could broaden differentials and influence decisions around stabilization, repeat imaging, and long-term endocrine follow-up. (lifescience.net)

What to watch: Watch for whether additional case reports clarify how often adrenal hemorrhage with caval extension is missed, misclassified, or confused with adrenal neoplasia in dogs with acute endocrine collapse. (lifescience.net)