Handling of radical prostatectomy specimens: Total or partial embedding?

Ben Vainer (1) , Birgitte Grønkær Toft (2) , Karen Ege Olsen (3) , Grete Krag Jacobsen (2) , Niels Marcussen (3)

1 Dept. of Pathology
2 Dept. of Pathology
3 Dept. of Pathology

Proper examination and accurate reporting of radical prostatectomy specimens (RPS) is essential in determining post-surgical treatment and predicting patient outcome. Surveys have demonstrated the absence of consensus on handling of RPS. Aims: To determine whether significant information is lost when only half of the horizontal tissue sections are examined. Methods and Results: During a one-year period, 238 RPS were sectioned into horizontal slices. Apex and basis was cut sagitally, and remaining slices were embedded in quadrants. Glass slides from every second horizontal slice were withheld. The remaining slides were evaluated microscopically, and essential pathological parameters were recorded. Subsequently, a full report was compiled, including the withheld slides. A median of 12 slides (30%) were withheld during initial assessment. In 8 RPS (3.2%) the pTNM stage had to be changed; in 6 cases (2.6%) from pT2b to pT2c and in 2 cases (0.8%) from pT2c to pT3a. In 1 RPS (0.4%) the surgical margin status was changed. Conclusions: Only little information is lost with systematic partial embedding, overlooking features significant for the postoperative treatment in only 1.2%. Partial embedding as suggested, decreasing the laboratory workload by 30%, is concluded to be acceptable for valid histopathological assessment.

Mots clés: Medicine

Ben Vainer, Birgitte Grønkær Toft, Karen Ege Olsen, Grete Krag Jacobsen, Niels Marcussen. Handling of radical prostatectomy specimens: Total or partial embedding?. Histopathology, 2011, 58 (2), pp.211. ⟨10.1111/j.1365-2559.2011.03741.x⟩. ⟨hal-00614753⟩