Case Report: Possible spatially-distinct de novo invasive cervical carcinoma in the setting of isolated persistent HPV16 after ALA-PDT-mediated histological clearance of CIN3 - Scorecard - MDSpire
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Case Study: Potentially Spatially-Separated De Novo Invasive Cervical Carcinoma Following Isolated Persistent HPV16 After Histological Clearance of CIN3 via ALA-PDT

  • By

  • Huihui Cai

  • Yanci Che

  • Yutong Liu

  • Jing Wang

  • Tingting Ma

  • Rui Yao

  • September 8, 2026

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Clinical Scorecard: Case Study: Potentially Spatially-Separated De Novo Invasive Cervical Carcinoma Following Isolated Persistent HPV16 After Histological Clearance of CIN3 via ALA-PDT

At a Glance

CategoryDetail
ConditionCervical Intraepithelial Neoplasia Grade 3 (CIN3) and HPV16 Infection
Key MechanismsPersistent HPV16 infection may retain long-term malignant potential after CIN3 resolution.
Target PopulationWomen with CIN3 seeking fertility preservation.
Care SettingOncology and gynecology outpatient settings.

Key Highlights

  • Persistent HPV16 infection can occur after histological remission of CIN3.
  • A 32-year-old woman developed invasive cervical carcinoma after 20 months of loss to follow-up.
  • ALA-PDT is an off-guideline treatment option for fertility preservation in CIN3.
  • Risk-stratified surveillance is necessary for patients with persistent HPV16.
  • The case highlights the potential for de novo malignant transformation associated with HPV16.

Guideline-Based Recommendations

Diagnosis

  • Histological confirmation of CIN3 via biopsy.
  • Monitoring for persistent HPV16 post-treatment.

Management

  • Consider ALA-PDT for fertility-preserving treatment in select patients.
  • Standard treatments include LEEP and cold-knife conization.

Monitoring & Follow-up

  • Implement risk-stratified surveillance for patients with persistent HPV16.

Risks

  • Potential for disease progression and development of invasive carcinoma.

Patient & Prescribing Data

Women with CIN3 and persistent HPV16 infection.

ALA-PDT may not be formally recommended for CIN3 but is used for fertility preservation.

Clinical Best Practices

  • Ensure comprehensive counseling on treatment options and associated risks.
  • Promote adherence to follow-up surveillance to prevent advanced disease.

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