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An adenocarcinoma that arises from the extrahepatic bile ducts. It is characterized by the presence of signet ring malignant epithelial cells.
Biomarker and diagnostic research for extrahepatic bile duct signet ring cell carcinoma has been reported in the published literature.
No clinical trials have been registered for extrahepatic bile duct signet ring cell carcinoma.
8 publications have been identified in PubMed for extrahepatic bile duct signet ring cell carcinoma. Research spans Case Report / Case Series (38%), Diagnostic / Biomarker (25%), and Clinical Trial Publication (13%).
Navinés-López J (2026). [PMID: 41397636](https://pubmed.ncbi.nlm.nih.gov/41397636/). *Cirugia espanola*. [Clinical Trial Publication]
Liang Z (2025). [PMID: 39831606](https://pubmed.ncbi.nlm.nih.gov/39831606/). *Revista espanola de enfermedades digestivas*. [Diagnostic / Biomarker]
Sabrine D (2025). [PMID: 40098660](https://pubmed.ncbi.nlm.nih.gov/40098660/). *Clinical medicine insights. Case reports*. [Diagnostic / Biomarker]
Wen Y (2025). [PMID: 41158219](https://pubmed.ncbi.nlm.nih.gov/41158219/). *Translational cancer research*. [Epidemiology / Natural History]
Kitamura Y (2025). [PMID: 39974549](https://pubmed.ncbi.nlm.nih.gov/39974549/). *Surgical case reports*. [Case Report / Case Series]
Data assembled from 2 of 12 sources · Last updated Sep 20, 2026, 8:42 AM UTC
Zhang W (2025). [PMID: 39873153](https://pubmed.ncbi.nlm.nih.gov/39873153/). *Revista espanola de enfermedades digestivas*. [Case Report / Case Series]
Rai A (2025). [PMID: 40995162](https://pubmed.ncbi.nlm.nih.gov/40995162/). *Ochsner journal*. [Case Report / Case Series]
Nandy K (2025). [PMID: 40522349](https://pubmed.ncbi.nlm.nih.gov/40522349/). *Langenbeck's archives of surgery*. [Basic Science / Preclinical]