Table 1.

Summary of results within the melatonin group and control groups

Case	Author	Sites of Metastasis	Previous Treatment Received	Histology
1	Daw & Riley (4)	Umbilicus	-	SCC
2	Tharakaram et al. (5)	Thigh	-	SCC
3	Chapman et al. (6)	Umbilicus	Initial Presentation	SCC
4.	Bohme et al. (7)	Two cases: One at Scalp, another in inguinal region	-	-
5.	Hayes et al. (8)	Upper back	-	SCC
6.	Lane et al. (9)	Laparoscopic port site	-	ASC
7.	Selo-Ojeme et al. (10)	Hysterectomy incision site	Radical Hysterectomy	AC
8.	Pertzborn et al. (11)	Hand	On Initial Presentation	-
9.	Maheswari et al. (12)	Scalp	Radiotherapy	SCC
10.	Tjalma et al. (13)	Laparoscopic port site	Radiotherapy	SCC
11.	Behtash et al. (14)	Abdominal wall (drain site)	Radical Surgery & Radiotherapy	SCC
12.	Liro et al. (15)	Abdominal wall	Radical Surgery & Radiotherapy	SCC
13.	Agarwal et al. (16)	Scalp	Radiotherapy	SCC
14.	Park et al. (17)	Scalp	-	SCC
15.	Srivastava et al. (18)	Incisional site	Radical Surgery & Radiotherapy	SCC
16.	Chung et al. (19)	Scalp presenting as alopecia neoplastica	Radical Surgery	SCC
17.	Sachdev & Jain (20)	Incisional site	Surgery	SCC
18.	Chen et al. (21)	Extremities, trunk, scalp	Chemo-radiotherapy	SCC
19.	Abhishek et al. (22)	Scalp		AC
20.	Behtash et al. (23)	Umbilicus	Chemo-radiotherapy	SCC
21	Ozdemir & Tuncbilek (24)	Nasal dorsum	-	SCC
22.	Deka et al. (Two Cases) (25)	Surgical scar	-	SCC
23.	Takagi et al. (26)	Scalp	Surgery & Chemoradiation	SCC
24.	Elamurugan et al. (27)	Palm (hand)	Radiotherapy	SCC
25.	Agrawal et al. (28)	Abdominal wall	Chemoradiotherapy	SCC
26.	Fogaca et al. (29)	All over	Surgery	Neuroendocrine Cancer
27.	Lee et al. (30)	All over	-
28.	Chung et al. (31)	-	-