Oral and maxillofacial pain as the first sign of metastasis of an occult primary tumour: A fifteen-year retrospective study

Table 1 Clinical data of the patients

Case	Sex	Age (year)	History	Location	Primary site	Clinical signs
1	M	41	3 yr after surgery	Mandible, posterior	Kidney	Mandible swelling, facial swelling, numbness
2	M	45	6 mo after RT	Mandible, posterior	Liver	Facial swelling, numbness, tenderness, limited mouth opening
3	M	53	None	Mandible, posterior	Kidney	Facial swelling, numbness, tenderness
4	F	57	None	Mandible, posterior	Lung	Facial swelling, tenderness, limited mouth opening
5	M	59	6 mo after tooth extraction	Mandible, posterior	Lung	Facial swelling
6	F	59	4 mo after tooth extraction	Mandible, posterior	Liver	Facial swelling, numbness, toothache
7	M	61	4 yr after RT	Maxilla, anterior	Gastric cardia	Maxilla swelling, loose tooth
8	M	65	None	Mandible, posterior	Liver	Facial swelling, numbness, tenderness, toothache, loose tooth
9	F	66	None	Maxilla, posterior;Mandible, posterior	Liver	Mandible swelling, numbness, tenderness,
10	F	67	None	Mandible, posterior	Lung	Numbness, toothache
11	M	72	None	Mandible, posterior	Lung	Painless mass
12	M	73	6 mo after surgery	Mandible, posterior	Lung	Mass, tenderness, numbness
13	M	75	None	Mandible, posterior	Lung	Facial swelling, tenderness, numbness
14	M	79	None	Mandible, anterior and posterior	Prostate	Facial swelling, tenderness, numbness

M: Male; F: Female; RT: Radiotherapy.