title: [Recurrent right iliac fossa pain in children: two cases report related to food allergy].
abstract: OBJECTIVE
  To present two cases of food allergy of uncommon presentation and discuss the diagnostic approach to give in these cases: Case N° 1: 11-year-old girl, afflicting pain in the right iliac fossa 3 months ago.
  
  
  BACKGROUND
  Prematurity, atopy (dermatitis, rhinitis, cramping). Sister and mother are atopic too. The physical exam show exquisite pain on right iliac fossa at palpation. Laboratory: Urine normal, parasitological serial negative. EDN (neurotoxin derived from eosinophils) fecal >3210 ng/ml (V. N. < 360 ng/ml). Colonoscopy: lymphoid hyperplasia of ileum. Case N° 2: Child of 9 years of age. Right fossa iliac painful three months ago, predominantly nocturnal and with irradiation to right thigh. A child psychiatrist may prescribe antidepressants. Personal History: Breastfeeding and formula since newborn. Atopy: asthma, atopic dermatitis, infant colic. Family history: Mother allergic to food, father presents rhinitis. The physical examination: Pain on palpation in the right iliac fossa. Laboratory: Immunoglobulin E 160.5 IU/ml (V. N. < 90) Colonoscopy: lymphoid hyperplasia in the distal ileum. Both cases relieved by hypoallergenic diet.
  
  
  CONCLUSIONS
  When both, ileal nodular lymphoid hyperplasia and atopy personal or familiar are present, we must be think in food allergy therapeutic.
authors: Unidad de Gastropediatría, Servicio de Pediatría Especializada, Hospital Nacional Edgardo Rebagliati Martins. Lima, Perú.
authors: Ana
authors: A
authors: Muñoz-Urribarri
authors: UNIGRANRIO. Rio de Janeiro, Brasil.
authors: Aderbal
authors: A
authors: Sabrá
authors: UNIGRANRIO. Rio de Janeiro, Brasil.
authors: Isaac
authors: I
authors: Tenorio
authors: UNIGRANRIO. Rio de Janeiro, Brasil.
authors: Selma
authors: S
authors: Sabrá
authors: Precisa Laboratorios Arias-Stella. Lima, Perú.
authors: Javier
authors: J
authors: Arias-Stella Castillo
mesh_terms: D015746:Abdominal Pain / Q000209:etiology*; D002648:Child; D003113:Colonoscopy; D005260:Female; D005512:Food Hypersensitivity / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D007077:Ileal Diseases / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D007085:Ilium; D008297:Male; D019310:Pseudolymphoma / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D012008:Recurrence