<prompt> Predisposing factors of Ca esophagusTylosisAchalasiaBarrets esophagusHiatus hernia  <response>: PREDISPOSING FACTORS OF SCC- 1.SEX -4 TIMES MORE IN MALE 2.ETHINICITY-AFRICAN AMERICANS, CENTRAL ASIA, MIDDLE EAST 3.ALCOHOLISM AND TOBACCO CHEWING 4.INTRINSIC DEFECTS-PLUMMER VINSON SYNDROME, ACHALASIA 5.HEREDITARY CANCER SYNDROME - TYLOSIS, FANCONI ANEMIA 6.HPV 7.HO CAUSTIC INGESTION ADENO CARCINOMA 1.SEX -MALE 2.ETHINICITY- WHITE 3.BARRETT;S OESOPHAGUS 4.SMOKING 5.OBESITY SABISTON TEXTBOOK OF SURGERY 20TH EDITION 