Case number Sex/age Gingival tumor as first sign Cancer differentiation Upper/lower jaw Distant metastasis besides gingival Therapy Truncated/overall survival Reference number 1 M/56 Yes NA Upper Lungs, pancreas, adrenal, LNs NA 2/2 months [7 ] 2 M/51 Yes Undifferentiation Upper Lung, LNs, skin, peritoneum Resection of gingival tumor 2/2 months [8 ] 3 M/52 No High differentiation Lower Lungs Hepatectomy, resection of gingival tumor 15/39 months [9 ] 4 M/56 No NA Upper None Resection of gingival tumor 1/6 months [10 ] 5 M/64 No NA Upper Lungs, adrenals, LNs TACE, resection of gingival tumor 1/22 months [11 ] 6 F/78 Yes Moderate differentiation Upper Skull, lumbar vertebrae Palliative excision of gingival tumor 4/4 months [12 ] 7 M/66 Yes NA Lower None Resection of gingival tumor 5/5 months [13 ] 8 M/44 No NA Upper Nasal cavity, bone Chemotherapy >3/24 months [14 ] 9 M/70 Yes Moderate differentiation Upper/lower Lungs, brain Resection of gingival tumor, TACE 8/8 months [15 ] 10 M/55 No NA Lower Mandible and iliac bones, ribs, scapule, pleura, brain Liver tumor alcoholization, TACE, segmental resection of left mandible >8/92 months [16 ] 11 M/65 No NA Upper None Resection of gingival tumor, chemotherapy 8/15 months [17 ] 12 M/60 No Moderate differentiation Lower Lung, skin of multiple sites Partial hepatectomy and TACE 6/38 months [3 ] 13 F/72 No Moderate differentiation Upper Cardiac muscle, abdominal LN TACE, radiotherapy in gingival tumor 1/10 months [18 ] 14 M/60 No Poor differentiation Upper Lungs, brain Chemotherapy, TACE, sorafenib, palliative resection of gingival tumor 2/13 months Present case
