Tongue Twisters

Important

These modules are archived and should only be referenced for historical purposes.

Some of the new terms included in ICD-O-3 are real tongue-twisters:

  • Trichilemmocarcinoma
  • Angiomyofibroblastoma
  • Adenomyoepithelioma
  • Ectomesenchymoma
  • Cystadenocarcinofibroma
  • Lymphangioleiomyomatosis

Tricilemmocarcinoma is in the basal cell series, 8102/3, and is reportable.

Angiomyofibroblastoma is a benign tumor in the fibroma series.

Adenomyoepithelioma is a benign tumor in the complex mixed and stromal neoplasms.

Ectomesenchymoma is a malignancy in the myomatous tumor series.

Cystadenocarcinofibroma is part of three new codes (8313/3 = clear cell cystadenocarcinofibroma ; 9014/3 = serous cystadenocarcinofibroma; and 9015 = mucinous cystadenocarcinofibroma) and is reportable.

And the winner (at 11 syllables!) is a borderline condition, lymphangioleiomyomatosis.

Suggested Citation

SEER Training Modules: Tongue Twisters. U.S. National Institutes of Health, National Cancer Institute. Cited 07 January 2026. Available from: https://training.seer.cancer.gov.