A 58-year-old patient with metastasizing squamous cell carcinoma of th
e left lung developed fever, diffuse abdominal pain and profuse diarrh
ea while treated with paclitaxel and radiation therapy. A sigmoidoscop
y was performed to exclude pseudomembranous colitis but showed multipl
e mucosal petechiae. Histologic examination disclosed neutropenic coli
tis. Conservative treatment was successful.