Final Diagnosis
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A. LEFT ANTERIOR APEX- 2 CORES, NEEDLE CORE BIOPSY:
Benign prostatic tissue with focal chronic inflammation.
No malignancy identified.
B. LEFT POSTERIOR APEX- 2 CORES, NEEDLE CORE BIOPSY:
Benign prostatic tissue.
No malignancy identified.
C. LEFT ANTERIOR BASE- 2 CORES, NEEDLE CORE BIOPSY:
Benign prostatic tissue with focal chronic inflammation.
No malignancy identified.
D. LEFT POSTERIOR BASE- 2 CORES, NEEDLE CORE BIOPSY:
Benign prostatic tissue with focal atrophy.
No malignancy identified.
See Comment.
E. RIGHT ANTERIOR APEX- 2 CORES, NEEDLE CORE BIOPSY:
Acinar adenocarcinoma, Gleason 3+4=7 (Grade Group 2), in 1 of 2 cores, involving 15% of the combined core lengths.
Percentage of Gleason pattern 4: 10%.
See Comment.
F. ROI, RIGHT POSTERIOR APEX- 3 CORES, NEEDLE CORE BIOPSY:
Acinar adenocarcinoma, Gleason 3+4=7 (Grade Group 2), in 3 of 3 cores, involving 70% of the combined core lengths.
Percentage of Gleason pattern 4: 10%.
Perineural invasion is present.
See Comment.
G. RIGHT ANTERIOR BASE 2 CORES, NEEDLE CORE BIOPSY:
Benign prostatic tissue.
No malignancy identified.
H. RIGHT POSTERIOR BASE- 2 CORES, NEEDLE CORE BIOPSY:
Acinar adenocarcinoma, Gleason 3+4=7 (Grade Group 2), in 1 of 2 cores, involving 2% of the combined core lengths.
Percentage of Gleason pattern 4: 10%.
See Comment.
Comment
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Following review of the H&E stained slides, it was determined that PIN4 immunohistochemical stains were necessary for diagnosis. The stains support the diagnoses.
Immunohistochemical stains:
Block
Stain
Result
D1-5
PIN-4
Basal cells present; AMACR is not increased; Negative for adenocarcinoma
E1-5
PIN-4
Basal cells absent; AMACR is increased; Positive for adenocarcinoma
F1-5
PIN-4
Basal cells absent; AMACR is increased; Positive for adenocarcinoma
H1-5
PIN-4
Basal cells absent; AMACR is increased; Positive for adenocarcinoma