CT case report highlights metastatic uterine cancer in pet pig

A case report in the Journal of Veterinary Diagnostic Investigation details an antemortem diagnosis of metastatic endometrial adenocarcinoma in a Vietnamese Pot-bellied sow, highlighting how computed tomography can uncover advanced reproductive cancer before death in a species where such diagnoses are rarely reported. According to the abstract provided with the publication, the 13-year-old sow was evaluated for blood-tinged mucoid vulvar discharge, intermittent coughing, and weight loss, and CT identified multilobulated cystic and mineralized uterine masses, numerous lung nodules, and abdominal lymphadenopathy, leading clinicians to suspect malignant neoplasia.

The report stands out partly because published literature on uterine adenocarcinoma in pot-bellied pigs is limited. A prior JVDI case report from 2004 described a 16-year-old female Vietnamese pot-bellied pig with diffuse cystic endometrial hyperplasia and endometrial adenocarcinoma that had already metastasized to lymph nodes, liver, and lungs, but that diagnosis was made after euthanasia rather than during life. The earlier authors suggested that aging pigs may develop uterine lesions similar to those seen in women, offering some biological context for why these cases may appear in older intact sows. (pubmed.ncbi.nlm.nih.gov)

In the new case, the clinical picture appears especially relevant for mixed or exotic companion animal practice because the presenting signs were not limited to the reproductive tract. Blood-tinged vulvar discharge pointed to uterine disease, but the chronic cough and weight loss aligned with the metastatic burden seen on CT. That combination matters: in older pigs, respiratory signs and poor body condition might be worked up separately from reproductive complaints unless clinicians keep disseminated neoplasia on the differential. Based on the abstract, CT provided a whole-body view that tied those findings together into a single disease process.

That imaging angle is part of the broader story. The American College of Veterinary Radiology describes CT as one of the core advanced imaging modalities used in veterinary practice across species, and notes that specialized imaging has expanded as animal health care has become more sophisticated. While those statements are general rather than pig-specific, they help explain why this case is notable now: companion pig medicine is increasingly intersecting with referral-level imaging, allowing clinicians to reach more definitive diagnoses in species that historically may have been under-imaged. (acvr.org)

There does not appear to be a widely circulated press release or substantial public industry commentary tied to this specific case report, which is common for single-animal diagnostic reports. Still, the case fits with a small but growing body of literature showing advanced imaging being used in Vietnamese Pot-bellied pigs for complex conditions, including a recent PubMed-indexed report on nasal squamous cell carcinoma managed with a multimodal diagnostic and surgical approach that included CT. That suggests referral clinicians are seeing more companion pigs presented for imaging-intensive oncology workups than the literature once reflected. (pubmed.ncbi.nlm.nih.gov)

Why it matters: For veterinary professionals, the practical takeaway is less about prevalence and more about pattern recognition. In an older intact sow, vulvar discharge, chronic weight loss, coughing, and decline should raise concern for uterine neoplasia with metastasis, alongside more common differentials. The case also reinforces the value of cross-sectional imaging when ultrasound or physical exam can’t fully define lesion extent, especially if pet parents are weighing prognosis, humane endpoints, or referral options. Even when treatment is not pursued, an antemortem diagnosis can sharpen case management, client communication, and necropsy expectations. (pubmed.ncbi.nlm.nih.gov)

The case may also feed into longer-running conversations about preventive reproductive care in companion pigs. Although this report does not test prevention strategies, the fact pattern, together with earlier reports of severe uterine pathology in aged female Vietnamese pot-bellied pigs, supports the clinical impression that intact status carries meaningful long-term reproductive risk. That’s an inference from case literature rather than a formal incidence estimate, but it’s relevant to wellness discussions with pet parents of young female pigs. (pubmed.ncbi.nlm.nih.gov)

What to watch: The next thing to watch is whether additional case reports or retrospective series clarify how often uterine malignancy is being missed in pet pigs, when CT changes management, and whether earlier elective sterilization gains more attention as a preventive recommendation in companion swine medicine. (pubmed.ncbi.nlm.nih.gov)