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Partial atrophy in prostate needle cores: another diagnostic pitfall for the surgical pathologist
J R Oppenheimer1, M L Wills, J I Epstein
1Department of Pathology, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.
The American Journal of Surgical Pathology
|April 16, 1998
Summary
Partial atrophy is a prostate condition that can be mistaken for cancer. Recognizing its distinct features, like scant cytoplasm and crinkled nuclei, is key for accurate diagnosis.
Area of Science:
- Uropathology
- Prostate Cancer Diagnosis
- Histopathology
Background:
- A specific variant of prostate atrophy, termed partial atrophy, is often misdiagnosed as well-differentiated adenocarcinoma.
- Distinguishing partial atrophy from malignancy is crucial for appropriate patient management.
Purpose of the Study:
- To define the histopathological features of partial atrophy.
- To identify diagnostic clues that differentiate partial atrophy from prostate adenocarcinoma.
Main Methods:
- Retrospective review of 51 cases identified as partial atrophy.
- Analysis of nuclear and cytoplasmic features, basal cell presence, and coexisting conditions.
Main Results:
- Partial atrophy exhibits scant cytoplasm, irregular/crinkled nuclei (frequent in 23.5%), and visible nucleoli (frequent in 25.4%).
- Basal cells were difficult to identify in 62.7% of cases.
- Prostate adenocarcinoma was present in other cores in 15.6% of cases.
- Associated fully developed atrophy was found in 35.3% of cases, often within the same gland.
Conclusions:
- Partial atrophy can mimic low-grade adenocarcinoma due to crowded glands, irregular nuclei, and nucleoli.
- Key differentiating features include scant cytoplasm, distinct crinkled nuclei, pale cytoplasm, and association with benign atrophy.