Table 2.

Date of 27 cases [Rearranged with additional 6 cases from reference Talibzade]

Reference	Onset	Treatment	Duration (days)	Proposed aetiology
Nuckols [26]	Not reported	Not reported	Not reported	Not reported
Humbert et al. [22]	Day 1	Observation	2	Polycythemia
	Day 4	Phlebotomy	5	Polycythemia
Laroque and Cosgrove [23]	Not reported	Observation	4	Polycythemia
Amlie et al. [25]	Day 37 (delivery at 29 weeks)	Observation	12	Blood transfusion
Leal et al. [29]	At birth	Observation	6	Idiopathic
Shapiro [30]	At birth	Observation	3	Idiopathic
Merlob and Livne [11]	At birth	Observation	6	Idiopathic
	Day 1	Observation	5	Idiopathic
	Day 5	Observation	4	Idiopathic
	Day 1	Observation		Idiopathic
Stothers and Rictchie [31]	At birth	Intravenous ketamine	3	Idiopathic
Walker and Casale [24]	At birth	Exchange transfusion	4	Polycythemia
Meijer and Bakker [32]	Day 1	Observation	4	Idiopathic
Burgu et al. [21]	Day 1	Observation	3	Idiopathic
Aktoz et al. [20]	Day 1	Observation	4	Idiopathic
Sood et al. [27]	Day 4	Surgery	20	Pyocavernositis
Dust et al. [33]	Day 1	Observation	6	Idiopathic
Karakaja et al. [36]	Day 7	Observation	3	Idiopathic
Marmara [34]	Day 1	Observation	6	Idiopathic
	Day 1	Observation	7	Idiopathic
Kuwano et al. [19]	At birth	Observation	5	Idiopathic
Laamiri et al. [37]	Day 1	Observation	9	Idiopathic
Miller and Roth [28]	–	Observation	3	iNO therapy, Sildenafil
	–	Observation	–	Sildenafil
Samiee S. et al. [35]	Day one	Observation	5	Idiopathic
Present case	Day one	Observation	3	Idiopathic