What should you know about immunohistochemistry prostate cancer?

A laboratory adds selected antibodies to thin slices of tissue. If an antibody attaches to a particular protein, a coloured signal appears under the microscope. The pattern helps the pathologist assess whether cells fit a prostate origin and whether a suspicious area has features of prostate cancer.

This test is performed on tissue already collected, often during a biopsy. It does not replace the microscopic assessment of cell shape, the clinical examination, imaging, or the prostate-specific antigen result. A report may list the markers tested and explain how their pattern supports or argues against a diagnosis.

Ask for the pathology report and have the treating team explain each marker in relation to the biopsy findings. The next step may be confirmation of the diagnosis, grading of the tumour, or discussion of staging and treatment choices. Bring the report to appointments because a single marker rarely provides the whole answer.

If tissue is limited or the result is unclear, the team may recommend additional staining, review by another specialist pathologist, or another biopsy. Do not interpret a positive stain as a treatment decision by itself.

Contact the clinical team promptly for fever, worsening pelvic pain, heavy bleeding, inability to pass urine, or feeling faint after a prostate biopsy. These symptoms can need assessment for a procedure-related problem and are separate from what the stain shows.

Which markers were tested, and what does their combined pattern indicate? Does the result confirm prostate cancer or help rule out another source? How does it affect the tumour grade, staging plan, and treatment discussion? Was enough tissue available for reliable interpretation?