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1000
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Abstract/Summary
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BACKGROUND: Proliferation and pre-malignancy are typical features of DCIS. The expression of PHH3 as a marker for proliferation and LDH 5 as an indicator for oxygen independent energy metabolism was investigated in order to assess their potential for an improved characterisation of these lesions.
METHODS: Archived tissue blocks and clinical records of 130 patients with DCIS. Immunohistochemistry for PHH3, LDH5, estrogen receptor (ER), progesterone receptor (PR), human EGF receptor 2 (HER2). Silverstein nuclear grading. Chi Square test for all factors.
RESULTS: Percentage of positive patients was 69% for PHH3, 94% for LDH5, 76% for ER, 67% for PR, and 21% for HER2. Significant correlation was seen between PHH3 and LDH5 expression. No correlation could be found for any of the other comparisons.
CONCLUSION: This is the first description of PHH3 and LDH5 in DCIS. The biological significance of PHH3 remains to be determined in a larger set ofpatients. LDH5 may be a useful diagnostic marker in the future. Positive HER2 receptors were considerably less frequent than previously reported.
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