Fernanda Silveira
					
				
				
				
				,
					Allergy and Immunology, Instituto Nacional De Saude Da Mulher, Da Criança e Do Adolescente Fernandes Figueira - IFF/ Fiocruz, Rio de Janeiro, Brazil
				
			
				
		
			
				
					
						Flavia Anisio
					
				
				
				
				,
					Allergy and Immunology, Instituto Nacional De Saude Da Mulher, Da Criança e Do Adolescente Fernandes Figueira - IFF/ Fiocruz, Rio de Janeiro, Brazil
				
			
				
		
			
				
					
						Liziane Nunes
					
				
				
				
				,
					Allergy and Immunology, Instituto Nacional De Saude Da Mulher, Da Criança e Do Adolescente Fernandes Figueira - IFF/ Fiocruz, Rio de Janeiro, Brazil
				
			
				
		
			
				
					
						Paula Lauria
					
				
				
				
				,
					Allergy and Immunology, Instituto Nacional De Saude Da Mulher, Da Criança e Do Adolescente Fernandes Figueira - IFF/ Fiocruz, Rio de Janeiro, Brazil
				
			
				
		
			
				
					
						Abelardo Neto
					
				
				
				
				,
					Allergy and Immunology, Instituto Nacional De Saude Da Mulher, Da Criança e Do Adolescente Fernandes Figueira - IFF/ Fiocruz, Rio de Janeiro, Brazil
				
			
				
		
			
				
					
						Patricia Lima
					
				
				
				
				,
					Allergy and Immunology, Instituto Nacional De Saude Da Mulher, Da Criança e Do Adolescente Fernandes Figueira - IFF/ Fiocruz, Rio de Janeiro, Brazil
				
			
				
		
			
				
					
						Franciane Silva
					
				
				
				
				,
					Allergy and Immunology, Instituto Nacional De Saude Da Mulher, Da Criança e Do Adolescente Fernandes Figueira - IFF/ Fiocruz, Rio de Janeiro, Brazil
				
			
				
		
			
				
					
						Juliana Fernandes
					
				
				
				
				,
					Hospital Israelita Albert Einstein, São Paulo, Brazil
				
			
				
		
			
				
					
						Celso Ungier
					
				
				
				
				,
					Allergy and Immunology, Instituto Nacional De Saude Da Mulher, Da Criança e Do Adolescente Fernandes Figueira - IFF/ Fiocruz, Rio de Janeiro, Brazil
				
			
				
		
			
				
					
						Sandra Bastos
					
				
				
				
				,
					Allergy and Immunology, Instituto Nacional De Saude Da Mulher, Da Criança e Do Adolescente Fernandes Figueira - IFF/ Fiocruz, Rio de Janeiro, Brazil
				
			
				
		
	
 
	
	
		Background: Severe combined immunodeficiency (SCID) is characterized by important impairment in differentiation of T and/or B lymphocytes and occasionally Natural Killer cells, representing a pediatric emergency. A case of immunodeficiency is described emphasizing symptoms, diagnosis and answer after bone marrow transplantation.
Methods: Case report of a 2 years old male patient with severe combined immunodeficiency (SCID), diagnosed at 9 months after hospitalization due to failure to thrive, chronic diarrhea and pneumonia. Evolved with recurrent respiratory and gastrointestinal infections although using prophylaxis and immunoglobulin infusion. Alogenic, haploidentical transplantation was carried out with positive selection of CD34+, at 18 months of age due no compatible donor been found. 
Results: Satisfactory answer after transplantation keeping infusion of IV immunoglobulin with clinical and laboratorial favorable evolution.
Conclusions: Bone marrow transplantation when succeeds is supposed to restore lymphocyte system diminishing risks of severe and fatal infections.