Evaluation of Extreme Apical Biopsy Cores in Mid-Gland and Apex Intraprostatic Lesions

Overview

This study evaluated the diagnostic value of extreme apical targeted biopsy (TBx) cores in men with mid-apical prostate lesions identified on mpMRI. Among 420 patients, extreme apical TBx cores provided limited additional detection of clinically significant prostate cancer (csPCa) beyond mid-gland sampling, suggesting potential for biopsy strategy optimization.

Background

Systematic transrectal ultrasound-guided biopsy (SBx) remains widely used for primary prostate cancer diagnosis, but mpMRI combined with targeted biopsy (TBx) offers superior accuracy. Pan-segmental mid-apical lesions, involving both mid-gland and apex, are common, yet the diagnostic contribution of extreme apical TBx cores is unclear. Given anatomical challenges and morbidity risks associated with apical sampling, optimizing TBx strategies to minimize unnecessary cores is clinically relevant.

Data Highlights

Key Findings

• Among 420 men with pan-segmental mid-apical mpMRI lesions, 44% had clinically significant prostate cancer detected by TBx.
• Median of 4 TBx cores were taken from mid-gland and 3 from apical segments per patient.
• Extreme apical TBx cores contributed limited additional csPCa detection beyond mid-gland cores.
• Biopsy strategies limiting or omitting extreme apical cores may reduce morbidity without compromising csPCa detection.
• PI-RADS scores were predominantly 4 (57%) and 3 (30%), supporting lesion suspicion.

Clinical Implications

In men with pan-segmental mid-apical prostate lesions, targeted biopsy strategies may be optimized by reducing or omitting extreme apical cores, potentially decreasing procedure-related morbidity. Clinicians should consider the anatomical distribution of lesions on mpMRI to tailor the number and location of biopsy cores, balancing diagnostic yield and patient safety.

Conclusion

Extreme apical targeted biopsy cores provide limited additional diagnostic value for clinically significant prostate cancer detection in mid-apical lesions. Tailored biopsy strategies focusing on mid-gland sampling may optimize diagnostic efficiency and reduce biopsy-related morbidity.

References

1. EAU Guidelines 2021 -- Prostate Cancer Diagnosis and Management
2. PI-RADS v2 Guidelines 2015 -- Prostate Imaging Reporting and Data System
3. Martini-Klinik Study 2015-2021 -- Evaluation of Extreme Apical Biopsy Cores