Table 1.

Patient characteristics at admission

Variables of interest (normal range)	Patient 1	Patient 2	Patient 3	Patient 4	Patient 5
Age (years)	7	8	10	11	14
Sex	Female	Male	Female	Female	Female
Acute severe COVID-19 or MIS-C	MIS-C	MIS-C	MIS-C	Acute severe COVID-19	Acute severe COVID-19
Immediate underlying abdominal condition	Colitis	Ileitis	Acute edematous pancreatitis	Perforated appendicitis	Perforated appendicitis
SARS-CoV-2 RTPCR	Negative	Negative	Positive	Positive	Positive
Anti SARS-CoV-2 spike antibody IgG (<0.8 U/mL)	Positive (68.36)	Positive (91.4)	-	-	-
CRP (<0.6 mg/dL)	19.7	3.28	9	6.36	9
Procalcitonin (<0.5 ng/mL)	9.49	0.29	0.15	29.99	0.24
D-dimer (<0.5 µg FEU/mL)	4.89	2.23	31.23	10	4.91
Ferritin (13–150 ng/mL)	231.4	118.4	233.7	15.95	140.2
LDH (85–227 U/L)	-	178	415	447	573
Amylase (25–125) U/L	27	36	66	-	-
Lipase (5–31) U/L	77.8	11.2	76	-	-
Ultrasound/CT imaging	Mesenteric lymphadenopathy, hepatomegaly, colon wall edema, leukoencepahlitis	Hepatomegaly, ascites, small bowel wall edema, pleural effusion, pulmonary alveolar hemorrhage	Acute edematous pancreatitis, ascites, colon wall edema, mesenteric lymphadenopathy, bilateral renal pyramid hypoenhancement, pleural effusion	Perforated appendicitis	Perforated appendicitis, splenomegaly

COVID-19: Coronavirus disease 2019, MIS-C: Multisystem inflammatory syndrome in children, SARS-CoV-2: Severe acute respiratory syndrome coronavirus 2, RTPCR: Reverse transcription-polymerase chain reaction, CRP: C-reactive protein, FEU: Fibrinogen, CT: Computed tomography, LDH: Lactate dehydrogenase, IgG: Immunoglobulin G