Table 1 Clinical characteristics and pathological/immunohistological findings
Adenoma n = 5 | Adenocarcinoma | ||||
|---|---|---|---|---|---|
Tis and T1 | T1 | T2 | T3 | ||
(no infiltration in the sphincter of Oddi) n = 5 | (infiltration in the sphincter of Oddi) n = 3 | n = 5 | n = 7 | ||
Treatment | |||||
Endoscopic papillectomy | 5 | 4 | 1 | 1 | 0 |
Surgical operation | 0 | 1 | 2 | 4 | 7 |
Tumor differentiation | |||||
Well | – | 5 | 2 | 2 | 0 |
Moderate | – | 0 | 1 | 3 | 5 |
Poor | – | 0 | 0 | 0 | 2 |
Lymphatic invasion | – | 0 | 0 | 2 | 6 |
Venous invasion | – | 0 | 0 | 2 | 5 |
Lymph node metastasis | – | 0 | 0 | 2 | 7 |
Histological category | |||||
Intestinal | 5 | 3 | 3 | 3 | 1 |
Pancreatobiliary | 0 | 0 | 0 | 0 | 4 |
Unclassifiable | 0 | 2 | 0 | 2 | 2 |
IMP3-positive cells (%) in resected specimen, median (range) | 5 (0–5) | 5 (0–30) | 50 (0–70) | 20 (5–70) | 20 (0–90) |
IMP3-positive cell rate ≥ 10% | 0 | 20 | 66.7 | 80 | 71.4 |
IMP3-positive cells (%) in biopsy specimens, median (range) | 5 (0–80) | 10 (0–30) | 5 (0–60) | 60 (0–100) | 50 (15–100)a |
IMP3-positive cell rate ≥ 10% | 20 | 60 | 33.3 | 80 | 100a |