Table 1.
Summary of the reported MR imaging findings of primary hepatic carcinoid tumors
| Author (year) | Age/sex | T1-weighted imaging findings | T2-weighted imaging findings |
|---|---|---|---|
| Iwao et al. (2001) | 75/M | Hypointense masses | Hyperintense masses |
| Fenoglio et al. (2009) | 65/M | A hypointense mass | A weak irregular hyperintense mass |
| Takayasu et al. (1992) | 30/F | A hypointense mass with multiple small hyperintense areas | A hyperintense mass with small more hyperintense and hypointense areas |
| 74/F | A hypointense mass with hyperintense foci | A hyperintense mass with more hyperintense zonal areas | |
| Abdel Wahab et al. (2006) | 62/F | A heterogeneous hypointense mass | A mass with hyperintense areas of cystic degeneration |
| 55/F | NA | A hyperintense mass with areas of intermediate signal intensity | |
| 52/F | NA | A hyperintense mass with an area of intermediate signal intensity | |
| Imaoka et al. (1993) | 56/F | A heterogeneous hypointense mass with a small hyperintense spot | A hyperintense mass containing hypointense septae |
| Fujino et al. (1998) | 40/F | A heterogeneous hypointense area | A hyperintense mass containing more hyperintense areas |
| Kehagias et al. (1999) | 57/M | A mainly isointense mass relative to the normal liver with several hypointense areas | A mass composed of central and multiple peripheral hyperintense areas |
| Yeung et al. (2008) | 35/F | Two hepatic masses with thick hypointense walls and hyperintense centers | NA |
| Iimuro et al. (2002) | 71/M | A hypointense mass | A heterogeneous hyperintense mass |
| Our cases | 70/M | A mass including some hyperintense cystic areas | A mass including multiple cystic areas with shading |
| 74/F | A mainly hypointense mass including scattered hyperintense cystic areas | A mainly hyperintense mass including cystic areas with shading |
F: female, M: male, NA: not available.