Microinvasive squamous cell cervical carcinoma.

Several histologic tumor-related features are the key factors for further treatment planning in microinvasive cervical cancer (MIC) after conization. To better define the indications for conservative treatment of MIC we conducted a literature review for prognostic factors for MIC and we carried out a prospective observational study evaluating most important pathologic factors and the relationships between tumor and edges of the cone and incidence of recurrences. In our experience seven recurrences were observed. Two distinct groups of patients were identified with a clearance lower or higher of 10 and 8 mm for apical and lateral margin respectively. Depth of infiltration and even lymph-vascular involvement have been confirmed as the most important histologic parameters to be evaluated. Apical and lateral clearance of the tumor are significantly correlated with the recurrence rate. If an adequate lateral border of healthy tissue is present on the specimen, conization may be considered as definitive treatment of MIC.