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Graded Compression Sonography of the Colon in the Diagnosis of Polyps in Pediatric Patients

¹ Departamento de Ultra-sonografia, Hospital São Lucas-Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga, 6690, Porto Alegre, RS, Brazil, CEP 90610-000.
² Departamento de Pediatria, Hospital São Lucas-pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil, CEP 90610-000.
³ Departamento de Gastrenterologia Pediátrica, Hospital da Criança Conceição, Av. Francisco Trein, 596, Porto Alegre, RS, Brazil, CEP 91350-200.

OBJECTIVE. We report seven cases of juvenile polyps detected by graded compression gray-scale and color Doppler sonography in five children with nonspecific symptoms.

CONCLUSION. Intestinal polyps can be detected by graded compression gray-scale and color Doppler sonography without colonic preparation. On gray-scale sonography, polyps appeared as spherical or ovoid hypoechoic nodules in the colon lumen. Small cysts were identified inside the nodules. Four polyps had fewer and smaller cysts, whereas three others contained many cysts. A hyperechoic layer surrounding the polyp corresponded to the submucosa. In two patients, the polyp was visualized in the transverse colon and caused a colocolic intussusception, which reduced spontaneously during sonography. Color Doppler sonography showed four hypovascularized and three hypervascularized polyps.

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