Some case reports and series presumed a link between malignancy and relapsing polychondritis. The most frequent described neoplasms have been hematological disorders especially myelodysplastic syndromes. Less commonly have also been reported solid neoplasms as colorectal cancer like our patient. We suggest that patients with RP should be monitored more carefully even in remission for early detection of cancer.On admission to our department, physical examination revealed thickening of both external ears with erythema of the auricles with a saddle-nose. Fine rales over both lower lung fields were heard. Ophtalmological examination revealed bilateral anterior uveitis.Computed tomography of the chest disclosed stenosis of the trachea, swelling of cartilages and bilateral main bronchus (Figure 1).All the laboratory data was with the normal range. Antinuclear antibody was negative. Auricle biopsy showed a lymphocytic infiltration around the blood vessels, which is compatible with RP. Given that our patient has recurrent chondritis of auricles, nasal cartilage and the upper respiratory tract, recurrent uveitis, the diagnosis of RP was made and the patient was treated with Prednisone: 30 mg/day for 3 weeks and the dose of prednisone was tapered with no relapse.He was admitted 3 years after for acute rectal bleeding. The pulse rate was 110 per minute, and his blood pressure was 110/70 mmHg. He stated that he lost 10 Kg in weight 2 months before. Besides, he complained of lower abdominal pain and bloody diarrhea.Laboratory studies revealed anemia at 6.9 g/dl, the leukocyte count: 5690/mm 3 , the platelets count: 423000/mm 3 . Serum electrolytes, creatinine and liver tests were with the normal range. The stool culture was negative.Tumor markers were checked: PSA were normal but he had marked elevation of CEA, CA19-9 markers of up to 325 ng/ml. The patient was transfused. Abdominal computed tomography revealed a thickness of the descending colon wall, a liver mass on the right lobe and a necrotic adenopathy (Figure 2). Colonoscopy revealed an ulcer formation and bleeding from the sigmoid colon. Colic tumor specimen showed undifferentiated adenocarcinoma. An extended right colectomy was performed. A subsequent chemotherapy was administrated. He was discharged and still receiving Prednisone: 10 mg/day without flare-up of RP.