The authors report a case of carcinoma arising in a longstanding Zenke
r's diverticulum, in a 66 years old man that refused surgical treatmen
t for 25 years. Three months prior to his admission to our hospital, a
n exacerbation of his dysphagia, which became severe, was observed; an
d so was regurgitation, with passage to the airway during swallowing o
r when asleep. The esophagram showed the diverticulum without images s
ugestive of neoplasm, and with spilling of barium into the tracheobron
chial tree. Esophagoscopy was refused by the patient. After surgical d
iverticulectomy, a thickened area in the inferior portion of the diver
ticular body was observed, which was histologically reported as a squa
mous cell carcinoma with pearl formation, involving only the diverticu
lar wall. Complementary radiotherapy with TCT was administered over th
e esophagus, mediastinum and supraclavicular lymphatic areas, with a t
otal dose of 5000 Cgy. Concomitant chemotherapy with Mitomycin and 5-F
luorouracil was administered. After a 2 year follow-up, the patient is
completely asymptomatic. We discuss etiopathogenic factors, clinical
manifestations, diagnostic procedures, and therapeutic possibilities.