Columnar cells in posthysterectomy vaginal smears.

Area of Science:

• Gynecologic Pathology
• Cytopathology
• Oncology

Background:

• Columnar cells in posthysterectomy vaginal smears are uncommon.
• Previous literature on this finding is limited.
• Understanding the origin and significance of these cells is crucial for accurate diagnosis.

Purpose of the Study:

• To investigate the incidence and characteristics of columnar cells in posthysterectomy vaginal smears.
• To determine the potential source and clinical significance of these cytological findings.
• To differentiate benign metaplasia from potential neoplastic processes.

Main Methods:

• Retrospective review of nine cases with columnar cells in posthysterectomy vaginal smears over a six-year period.
• Analysis of patient history, including gynecological malignancies, treatments (radiation, chemotherapy), and time since surgery.
• Categorization of columnar cell morphology into three distinct patterns.
• Correlation of cytological findings with clinical follow-up, including pelvic examinations, repeat smears, colposcopy, and biopsies.

Main Results:

• Nine cases of columnar cells were identified in posthysterectomy vaginal smears from asymptomatic patients.
• Patients had undergone hysterectomy 8 months to 25 years prior for gynecological malignancies.
• The columnar cells presented in three patterns: reparative-like (4 cases), goblet-type (3 cases), and small round cell clusters (2 cases).
• No correlation was found between cell patterns and patient age, treatment history, or background.
• Follow-up evaluations revealed no evidence of vaginal pathology or malignancy in any patient.

Conclusions:

• The presence of columnar cells in posthysterectomy vaginal smears is rare but appears to be a benign finding.
• Benign metaplasia, specifically mucinous or goblet cell metaplasia in atrophic vaginal epithelium, is the likely source.
• These cytological findings do not indicate underlying vaginal pathology or malignancy and warrant reassurance.