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Mixed Adenoneuroendocrine Carcinoma Causing Colonic Intussusception

2016; Hindawi Publishing Corporation; Volume: 2016; Linguagem: Inglês

10.1155/2016/7684364

2090-6900

Marina Morais, André Costa-Pinho, Ana Marques, Joanne Lopes, Alexandre Duarte, Pedro Correia da Silva, José Manuel Lopes, J. Costa Maia,

Gastrointestinal Tumor Research and Treatment

Colonic intussusception is a rare cause of intestinal obstruction in adults and is caused by a malignant lesion in about 70% of cases. Early diagnosis and treatment are essential. We present a 64-year-old male patient with right colonic intussusception caused by a mixed adenoneuroendocrine carcinoma (MANEC), presenting as a giant pedunculated polyp (54 mm of largest diameter). The patient underwent right colectomy with primary anastomosis and adjuvant chemotherapy. The diagnosis of intussusception of the colon in adults is difficult because of its rarity and nonspecific clinical presentation. In this case, the cause was a rare histological type malignant tumor (MANEC).