Table 1. Sinonasal neuroendocrine tumor grade 1 and 2 (well-differentiated and moderately differentiated neuroendocrine carcinomas; typical carcinoid and atypical carcinoid): review of published cases

Author	Patient	Age/sex	Location	Histopathological subtype	Mitotic index	Ki-67%	Treatment	Outcome	Follow-up
Mhawej R18)	1	51/M	NPX	MD (AC)	1	3	OP	NED	14 mo
Likhacheva A19)	2	22/M	NS	MD	NS	NS	OP	NED	166 mo
	3	67/F	NS	MD	NS	NS	OP, C, R	DOD	56 mo
	4	43/F	NS	MD	NS	NS	OP, R	NED	31 mo
	5	46/F	NS	MD	NS	NS	C, R	NED	16 mo
	6	54/M	NS	MD	NS	NS	OP, C, R	Nodal metastasis (46 mo), NED	107 mo
	7	47/M	NS	MD	NS	NS	OP, R	Nodal metastasis (125 mo), NED	172 mo
	8	54/M	NS	MD	NS	NS	OP, C, R	Local recurrence (80 mo), DOD	119 mo
Vandist V20)	9	48/M	S, NPX	WD (TC)	<1	low	C, R	NS	NS
Wang CP6)	10	67/F	NC	MD (AC)	NS	NS	OP	Local recurrence	14 mo
	11	63/M	NC	MD (AC)	NS	NS	OP, C, R	NED	16 mo
	12	42/F	E	WD (TC)	NS	NS	OP	NED	84 mo
Perez-Ordoñez B21)	13	34/M	S, NPX	MD (AC)	2	NS	C, R	AWD	84 mo
Stephenson KA22)	14	48/M	NC, S	MD (AC)	NS	NS	OP	NED	36 mo
Lee DH17)	15	76/M	NC	WD (TC)	NS	NS	OP	NED	12 mo
Maharaj S12)	16	65/F	NC, M, S	MD	9	NS	OP, R	NED	93 mo
Kao HL11)	17	25/M	NC	MD	4	6	OP, C, R	AWD	53 mo
	18	59/M	NC	MD	7	17	OP	NED	60 mo
	19	41/M	NC	MD	8	18	OP	NED	65 mo
	20	24/F	E	MD	6	7	OP	AWD	78 mo
	21	31/M	NC	MD	6	6	OP	NED	50 mo
	22	23/M	NC	WD	0	1	OP	NED	42 mo
Current report	23	46/M	NC	MD (AC)	8	3 to 4	OP	NED	36 mo

NPX: nasopharynx, M: maxillary sinus, E: ethmoid sinus, S: sphenoid sinus, NC: nasal cavity, NS: not specified, WD: well-differentiated, MD: moderately differentiated, TC: typical carcinoid, AC: atypical carcinoid, OP: operation, C: chemotherapy, R: radiotherapy, NED: no evidence of disease, DOD: died of disease, AWD: alive with disease, mo: months.