OBJECTIVE: Report a case of a rare pancreatic adenocarcinoma presented as synchronic colorectal tumor. CASE REPORT: Seventy six year old man with high intensity and diffuse abdominal pain, diarrhea and vomiting during seven days. At that moment he had been in treatment for gastritis for 2 years and in the last four months he presented hyporexia and weight loss. He was dehydrated and malnourished, with abdominal distention and diffuse abdominal pain on clinical examination. Laboratorial exams showed hyperglycemia, x-ray revealed intense abdominal distention, abdominal ultrasound revealed cholecystolithiasis and upper digestive endoscopy showed pangastritis. The computed tomography just confirmed the cholecystolithiasis. A colonoscopy was performed and revealed three tumors located in the rectum, transverse colon and ileocecal valve that were biopsed and just showed inflammatory cells. As the symptoms persist he underwent laparoscopic cholecystectomy that was converted to the open technique when it was observed white flat lesions in the diaphragm peritoneum, the biopsies revealed adenocarcinoma. In the fifth postoperatory day the patient developed obstructive symptoms and underwent right colectomy with double terminal colostomy and pancreas biopsy that showed adenocarcinoma with immunohistochemical profile proving the pancreas as the source. The patient died within one month. CONCLUSION: The normal findings in radiological exams do not dismiss a diagnostic hypothesis and when the source of a tumor is not well established the clinical patterns should be considered and the immunohistochemical profile is essential to confirm the diagnosis.
pancreatic neoplasms; colorectal neoplasms, hereditary nonpolyposis; neoplasm metastasis; adenocarcinoma; tomography, x-ray computed
