Ayako Watanabe
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Ayako Watanabe has a total of 14 co-authors. Here are the top co-authors by number of shared publications:
- Go Saito
Department of Gastroenterology, Teikyo University Mizonokuchi Hospital, Japan
1 shared publication - Hiromichi Tsunashima
Department of Gastroenterology, Teikyo University Mizonokuchi Hospital, Japan
1 shared publication - Jun Hayakawa
Department of Gastroenterology, Teikyo University Mizonokuchi Hospital, Japan
1 shared publication - Kanji Okamoto
Department of Gastroenterology, Teikyo University Mizonokuchi Hospital, Japan
1 shared publication - Kotaro Matsumoto
Department of Gastroenterology, Teikyo University Mizonokuchi Hospital, Japan
1 shared publication - Mikiko Takahashi
Department of Diagnostic Pathology, Teikyo University Mizonokuchi Hospital, Japan
1 shared publication
Latest Publications
- Open Access
- 12 September 2024
- Published by MDPI AG in Preprints.org
19G EUS-FNA versus 22G EUS-FNB for Pancreatic Tumors: A Retrospective Comparative Study
BACKGROUND: Endoscopic ultrasound-guided tissue acquisition (EUS-TA) is essential technique for sampling solid pancreatic lesions. However, the optimal needle type for achieving high histological diagnostic capability remains unclear. This study compares the histological diagnostic capabilities of the 19G FNA needle and the 22G FNB needle for solid pancreatic lesions. METHODS: This single-center, retrospective study was conducted in patients who underwent EUS-TA for solid pancreatic lesions. Patients were allocated to either Group A, utilizing the 19G FNA needle, or Group B, utilizing the 22G FNB needle. The primary outcome was the diagnostic accuracy based on histology alone. RESULTS: 143 patients were analyzed, with 61 in Group A and 82 in Group B. Diagnostic accuracy was significantly higher in Group B for both histology alone (85.4% vs. 68.9%, p=0.02) and overall diagnostic accuracy (85.4% vs. 73.8%, p=0.02). Logistic regression analysis revealed that lesion size ≥25 mm was an independent factor contributing to higher diagnostic accuracy (OR 3.32, 95% CI 1.28-8.64, p=0.01). Subgroup analysis showed that diagnostic accuracy for 15–25 mm lesions was significantly higher in Group B (90.0% vs. 63.2%, p=0.02). Additionally, trans-gastric punctures had higher accuracy in Group B (94.7% vs. 73.5%, p=0.01). CONCLUSIONS: Our study showed the overall superiority of the 22G FNB needle for EUS-TA of solid pancreatic lesions. However, 19G FNA needle remains a valuable option under specific conditions.
- 12 September 2024
- Published by MDPI AG in Preprints.org
Open Access19G EUS-FNA versus 22G EUS-FNB for Pancreatic Tumors: A Retrospective Comparative Study
BACKGROUND: Endoscopic ultrasound-guided tissue acquisition (EUS-TA) is essential technique for sampling solid pancreatic lesions. However, the optimal needle type for achieving high histological diagnostic capability remains unclear. This study compares the histological diagnostic capabilities of the 19G FNA needle and the 22G FNB needle for solid pancreatic lesions. METHODS: This single-center, retrospective study was conducted in patients who underwent EUS-TA for solid pancreatic lesions. Patients were allocated to either Group A, utilizing the 19G FNA needle, or Group B, utilizing the 22G FNB needle. The primary outcome was the diagnostic accuracy based on histology alone. RESULTS: 143 patients were analyzed, with 61 in Group A and 82 in Group B. Diagnostic accuracy was significantly higher in Group B for both histology alone (85.4% vs. 68.9%, p=0.02) and overall diagnostic accuracy (85.4% vs. 73.8%, p=0.02). Logistic regression analysis revealed that lesion size ≥25 mm was an independent factor contributing to higher diagnostic accuracy (OR 3.32, 95% CI 1.28-8.64, p=0.01). Subgroup analysis showed that diagnostic accuracy for 15–25 mm lesions was significantly higher in Group B (90.0% vs. 63.2%, p=0.02). Additionally, trans-gastric punctures had higher accuracy in Group B (94.7% vs. 73.5%, p=0.01). CONCLUSIONS: Our study showed the overall superiority of the 22G FNB needle for EUS-TA of solid pancreatic lesions. However, 19G FNA needle remains a valuable option under specific conditions.