AtlasOral CancerVerrucous Carcinoma

Oral Cancer

Verrucous Carcinoma

aka Ackerman Tumour

Well-differentiated low-grade variant of oral SCC with warty exophytic architecture, pushing (not infiltrating) margins and excellent prognosis when adequately excised.

Eponym
Ackerman tumour
Margins
Pushing
Rx
Wide excision

§ overviewOverview

A non-metastasising well-differentiated variant of squamous cell carcinoma composed of thick, club-shaped keratotic papillae with pushing margins.

§ icdICD Classification

C06.9

§ etiologyEtiology

  • 01Chronic tobacco use (particularly smokeless: paan, snuff)
  • 02HPV-16/18 detected in some cases
  • 03Chronic irritation

§ epidemiologyEpidemiology

1–10% of oral SCC; elderly males; buccal mucosa & mandibular alveolus most common.

§ clinicalClinical Features

  • 01Slow-growing exophytic, cauliflower-like, white-warty painless lesion
  • 02May cover a large area and cause bone erosion (pressure-type)
  • 03Rarely metastasises to lymph nodes

§ differentialDifferential Diagnosis

  • 01Verrucous hyperplasia
  • 02Proliferative verrucous leukoplakia
  • 03Conventional SCC
  • 04Papilloma

§ histopathHistopathology

  • 01Thick club-shaped rete ridges with abundant keratin
  • 02Pushing (broad, blunt) margins — not infiltrative
  • 03Minimal cytological atypia — biopsy often reported as 'hyperplasia' unless deep specimen taken
  • 04Bulky keratin plugs (keratin cysts)

§ investigationsInvestigations

  • 01Deep incisional biopsy including epithelial–connective tissue interface (superficial biopsy misleading)
  • 02MRI/CT for bone involvement

§ treatmentTreatment

  • 01Wide surgical excision with 1 cm margin — treatment of choice
  • 02Neck dissection generally NOT required (nodes rare)
  • 03Radiotherapy avoided historically due to reported anaplastic transformation; contemporary evidence limited
  • 04Cryotherapy or laser for small lesions

§ complicationsComplications

  • 01Local recurrence if margins inadequate (10–20%)
  • 02Anaplastic transformation to conventional SCC (5–10%)

§ prognosisPrognosis

5-year survival >80% with adequate excision; better than conventional SCC due to absence of metastases.

§ examKey Examination Points

  • 01Take deep biopsy for diagnosis
  • 02No need for elective neck dissection

§ revisionQuick Revision Summary

  • 01Ackerman tumour · pushing margins · excision only · avoid RT

§ vivaBDS Viva Questions

  • 01Ackerman tumour?
  • 02Why is neck dissection often omitted?
  • 03Anaplastic transformation?

§ mcqsMCQs — Assessment (3)

Question 1

Verrucous carcinoma is characterised by:

Question 2

Treatment of choice:

Question 3

Metastatic potential:

References

  1. Ackerman LV. Surgery 1948

Draft — pending faculty review. Educational use only; verify against current guidelines and primary sources before clinical application.