Table 2.

Comparison of criteria and inconsistent findings for MIS-C

Criteria of MIS-C	Case-1	Case-2
Age below 21 years	Yes	Yes
Fever higher than 38°C for more than 24 hours	Yes	Yes
Requiring hospitalization due to severe illness	Yes	Yes
Multisystem organ involvement (more than two)	Cardiac (elevated BNP) Renal (acute kidney injury with decreased GFR) Hematological (elevated D-dimer, thrombocytopenia) Gastrointestinal (abdominal pain, vomiting) Neurological (altered mental status, headache)	Cardiac (hypotension, shock, elevated BNP) Renal (acute kidney injury with decreased GFR) Hematological (elevated D-dimer) Gastrointestinal (abdominal pain, vomiting)
Laboratory evidence of inflammation	Elevated levels of:	Elevated levels of:
	C-reactive protein	C-reactive protein
	Procalcitonin	Procalcitonin
	Fibrinogen	Fibrinogen
	D-dimer	D-dimer
	Neutrophilia	LDH
	Hypoalbuminemia	Neutrophilia
		Lymphocytopenia
Current or recent SARS-CoV-2 infection, exposure within four weeks	RT-PCR (-)	RT-PCR (-)
	ELISA IgG(+), IgM(-)	ELISA IgG(-), IgM(-)
	Exposure (+), 3 weeks previously	Exposure: unknown
Inconsistent findings with MIS-C	Bilateral flank pain	Right flank pain
	Bilateral CVA tenderness	Right CVA tenderness
	Bilateral multiple hypodense renal lesions on abdomen CT.	A hypodense lesion in the right kidney on abdomen CT

BNP – brain natriuretic peptide; CT – computed tomography; ELISA – enzyme-linked immunosorbent assay; RT-PCR – reverse transcription-polymerase chain reaction; SARS-CoV-2 – severe acute respiratory syndrome coronavirus 2.