Presenting symptoms predict local staging of anal cancer: a retrospective analysis of 86 patients.

BACKGROUND: Incidence of anal carcinoma (AC) is increasing and timely diagnosis is critical for efficient therapy. However, there is a paucity of recent studies addressing clinical symptoms and physical findings of anal carcinoma. METHODS: We performed a retrospective study reviewing history, symptoms and physical findings from 86 patients with newly diagnosed AC. We analyzed frequency of symptoms and physical findings according to T and TNM stage and their predictive value regarding tumor stage. RESULTS: Most patients presented with T2 (37 %) or T3 (29 %) cancer. 85 of 86 patients were symptomatic with anal bleeding (78 %), anal/perianal pain (63 %), weight loss (31 %) and foreign body sensation (22 %). 95 % of patients had ≥1 finding on physical examination including a visible tumor, palpable resistance and pain/blood during digital rectal examination. Patients with locally advanced disease (T3/T4) presented with more symptoms (p < 0.01) and more physical findings (p = 0.04) than patients with T1/T2 disease. On multivariate regression analysis perianal pain, painful defecation and weight loss were significantly associated with T3/T4 disease. CONCLUSION: Clinical symptoms and physical findings are present in nearly all AC patients. Pain referred to the perianal region, painful defecation and weight loss have predictive value for locally advanced disease.