| 1 | Shek et al. | 1995 | M/67 | Eustachian opening (ND) | Single | Early carcinoma | Otitis media | ND |
| 2 | Shek et al. | 1995 | M/63 | Eustachian opening (L) | Single | Early carcinoma | Tinnitus | ND |
| 3 | Kurihara et al. | 1997 | M/69 | Nasopharynx (L) | Multiple | ND | None | ND |
| 4 | Hirakawa et al. | 1999 | M/64 | Eustachian opening (B), nasopharynx and nasal cavity (L) | Multiple | Malignant tumor | Discomfort in throat | ND |
| 5 | Xue et al. | 1999 | M/70 | Eustachian opening (B) | Multiple | Nevus | Tinnitus | ND |
| 6 | Sakaki et al. | 2004 | M/80 | Nasophraynx and nasal cavity (L) | Multiple | Melanoma | Hoarseness | 10/day×50yr |
| 7 | Sakaki et al. | 2004 | M/69 | Eustachian opening (L) | Single | Melanoma | Rhinorrhea | 40/day×60yr |
| 8 | Sakaki et al. | 2004 | M/74 | Nasopharynx (L) | Single | Tumor | Epistaxis | ND |
| 9 | Sakaki et al. | 2004 | M/74 | Eustachian opening (R) | Multiple | Melanoma | Discomfort in throat | ND |
| 10 | Sakaki et al. | 2004 | M/68 | Nasopharynx (ND) | Single | Tumor | ND | ND |
| 11 | Sakaki et al. | 2004 | M/65 | Eustachian opening (R) | Single | ND | Hemoptysis | ND |
| 12 | Sakaki et al. | 2004 | M/63 | Eustachian opening (L) | Single | Melanoma | Epistaxis | ND |
| 13 | Takano et at. | 2004 | M/64 | Eustachian opening (L), torus tubarius (B) | Multiple | Melanoma | Discomfort in the ear | ND |
| 14 | Lui et al. | 2004 | M/79 | Eustachian opening (R) | Single | ND | Otitis media | ND |
| 15 | Liao et al. | 2005 | M/ND | Nasopharynx (B) | Multiple | ND | None | ND |
| 16 | Kondo et al. | 2010 | M/73 | Torus tubarius (B) | Multiple | Melanoma or hemangioma | Nasal congestion | Non-smoker |
| 17 | Li et al. | 2010 | M/58 | Nasopharynx (B) | Multiple | ND | Epistaxis | 20/day×40yr |
| 18 | Na et al. | 2012 | M/72 | Torus tubarius (B) Torus tubarius (L), | Multiple | Melanotic dysplasia Nasopharynqeal | Hearing impairment | 40/day×50yr |
| 19 | Na et al. | 2012 | M/71 | soft palate (ND) | Multiple | pigmented lesion | Hoarseness | 20/day×40yr |
| 20 | Na et al. | 2012 | M/51 | Torus tubarius (B) | Multiple | Melanotic oncocytic metaplasia | Pain of the tongue | ND |
| 21 | Chang et al. | 2014 | M/63 | Nasopharynx (ND) | Multiple | Melanoma | Ep it axis | 40/day×40yr |
| 22 | Tajima et al. | 2014 | M/57 | Torus tubarius (R) | Multiple | Melanoma | None | 30/day×40yr |
| 23 | Uehara et at. | 2015 | F/70 | Eustachian opening (ND) | Multiple | Melanosis | None | 5/day×50yr |
| 24 | Uehara et at. | 2015 | F/61 | Eustachian opening (L) | Single | Melanosis | Hoarsness | 23/day×40yr |
| 25 | Uehara et at. | 2015 | M/74 | Nasopharynx (B) | Multiple | Melanosis | Hoarsness | 20/day×50yr |
| 26 | Lin at el. | 2015 | M/60 | Torus tubarius (L) | Single | Nevus | None | ND |
| 27 | Chen at el. | 2020 | M/75 | Torus tubarius (R) | Multiple | Nevus or melanoma | Epistaxis | 30/day×50yr |
| 28 | Present case | 2020 | M/75 | Torus tubarius and nasal cavity (L) | Multiple | Melanosis | Otitis media | 10/day×50yr |