ArticleInternational journal of surgery case reports2026
A case of groove pancreatic carcinoma presenting with rapidly progressive ascending colon stenosis: a rare case report.
Article in International journal of surgery case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Introduction: Groove pancreatic carcinoma is a rare pancreatic cancer arising in the space between the pancreatic head, the duodenum, and the common bile duct. Owing to its unusual growth pattern and its resemblance to inflammatory conditions such as groove pancreatitis, preoperative diagnosis remains challenging. Presentation of the case: An 80-year-old man presented with abdominal pain and progressive stenosis of the ascending colon. Endoscopy demonstrated edematous narrowing of the duodenum and ascending colon without mucosal abnormalities. Cross-sectional imaging showed inflammatory changes around the pancreatic groove, but no definite mass lesion. Two months later, bowel obstruction developed due to the rapid progression of colonic stenosis, and a right hemicolectomy was performed. Histopathology demonstrated metastatic poorly differentiated adenocarcinoma involving the colonic wall. Postoperative positron emission tomography-computed tomography (PET-CT) revealed a retroperitoneal mass; however, the primary site remained unclear. Three months later, the disease progressed rapidly with multiple hepatic metastases. A pathological autopsy revealed a tumor in the pancreatic groove region with extensive retroperitoneal invasion, leading to the final diagnosis of groove pancreatic carcinoma. Discussion: Groove pancreatic carcinoma commonly presents with duodenal stenosis and is frequently difficult to distinguish from inflammatory conditions. Direct invasion of the colon is extremely rare. In this case, retroperitoneal tumor spread from the pancreatic groove resulted in rapidly progressive ascending colon stenosis, which preceded the diagnosis of the primary tumor. Conclusion: This case highlights the diagnostic difficulty and unusual clinical presentation of groove pancreatic carcinoma. Rapidly progressive colonic stenosis adjacent to the pancreatic groove should raise suspicion for this rare malignancy, even in the absence of typical pancreatic findings.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.