Table 3

Premalignancies and non-malignant tumours in 146 CMMRD patients

Type of neoplasiaNumber of patientsMedian age at first diagnosis in yearsAge range at first diagnosis in years
Adenomas/polyps of colon and rectum52146–46
Duodenal adenomas/polyps81410–32
Gastric polyps1n.r.n.r.
Hepatic adenomas39
Optic glioma13
Pilomatricomas (epithelioma of Malherbe)22 years 8 months
Polyps of vocal cord1in infancy
  • CMMRD, constitutional mismatch repair deficiency; n.r., not reported.