Peer-reviewed veterinary case report
Young female Chihuahua with recurring carotid body tumor and neck pain
By Teh, Angeline Ping Ping et al.·Published in The Journal of veterinary medical science·2017·Faculty of Agriculture, Japan·View original on PubMed →
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Original publication title: An atypical case of recurrent carotid body carcinoma in a young adult dog: Histopathological, immunohistochemical and electron microscopic study.
- Species:
- dog
Plain-English summary
A 3.5-year-old female Chihuahua was brought to the vet because she had neck pain, an intermittent cough, and trouble swallowing. After examining her and taking images of her neck, the vet found a solid mass in the area behind her throat. Unfortunately, after surgery to remove the tumor, it was discovered that the cancer had spread to her blood vessels. This type of cancer, called carotid body carcinoma, is rare in dogs, and the vet used special tests to confirm the diagnosis.
People also search for: Chihuahua neck pain · dog cough and swallowing problems · carotid body carcinoma in dogs · dog cancer treatment options
Abstract
A 3.5-year-old female Chihuahua was presented with complaint of neck pain, intermittent cough and dysphagia. Physical examination and diagnostic imaging of neck region revealed a solid and highly vascularized mass involving the retropharyngeal region. Histologically, the mass showed an atypical zellballen pattern which comprised of high density of type I chief cells with high nuclear cytoplasmic ratio and separated by delicate fibrovascular stroma. Immunoreactivity for neuroendocrine markers was diffusely positive in cytoplasm of tumor cells. Disseminated tumor emboli in external jugular vein were detected 6 months after initial surgery. An electron microscopic study revealed numerous electron-dense intracytoplasmic neurosecretory granules. Based on these findings, carotid body carcinoma was diagnosed.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/28239052/