Magnifying endoscopy with crystal violet staining in the differential diagnosis of sporadic nonampullary duodenal adenoma/carcinoma

Magnifying endoscopy with crystal violet staining in the differential diagnosis of sporadic nonampullary duodenal adenoma/carcinoma - Magnifying endoscopy with crystal violet staining in the differential diagnosis of duodenal adenoma/carcinoma

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000016815

Enrollment

Registered

2015-03-17

Start date

2012-10-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Sporadic nonampullary duodenal adenoma/carcinoma

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients who underwent endoscopic resection of nonampurally duodenal lesions and confirmed diagnosis of adenoma/carcinoma with pathological diagnosis

Exclusion criteria

Exclusion criteria: Patients with polyposis syndrome or evaluated incompetent by doctors in attendance

Design outcomes

Primary

Measure	Time frame
The accuracy of the differential diagnosis of sporadic nonampullary duodenal adenoma/carcinoma by magnifying endoscopy with crystal violet staining (low-grade dysplasia or high-grade dysplasia/carcinoma)	—

Secondary

Measure	Time frame
The sensitivity, specificity, positive predictive value, and negative predictive value of the differential diagnosis of sporadic nonampullary duodenal adenoma/carcinoma by magnifying endoscopy with crystal violet staining (low-grade dysplasia or high-grade dysplasia/carcinoma) and the relationship between these and patients background or lesions information	—

Countries

Japan

Contacts

Public ContactDaisuke Maruoka

Chiba University Hospital Gastroenterology

maruoka-cib@umin.ac.jp043-226-2083

Outcome results