Table 5.
Histopathological analysis of invasive micropapillary carcinoma in other sites of the gastrointestinal tract
| Parameter | Khayyata et al[25], 2005 | Kitagawa et al[26], 2007 | Kondo et al[23], 2009 | Fujita et al[24], 2010 |
| No. of patients | 16 | 1 | 1 | 1 |
| Mean age, yr | 69 | 67 | 75 | 53 |
| Sex | F-6 | M | F | M |
| M-10 | ||||
| Location | Ampullo-pancreatobiliary region | Pancreatic head | Bile duct | Ampulla of Vater |
| Tumor size | ||||
| < 5 cm | 14 | 1 | 1 | 1 |
| > 5 cm | ND | 0 | 0 | 0 |
| Percentage of IMPC | > 20% | PD | ND | PD |
| pT stage (T) | ||||
| T1 | 0 | 1 | 0 | 1 |
| T2 | 0 | 0 | 1 | 0 |
| T3 | 0 | 0 | 0 | 0 |
| T4 | 13 | 0 | 0 | 0 |
| Lymphovascular invasion | Yes-3 | Yes | Yes | Yes |
| (Yes/No) | No-13 | |||
| Lymph node metastasis (N) | Yes-11 | Yes | Yes | Yes |
| (Yes/No) | No-4 | |||
| Distant metastasis (M) | Yes-4 | Yes | ND | Yes |
| (Yes/No) | No-12 |
PD: Predominant; ND: No data; M: Male; F: Female.