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[Immunohistochemistry in the anatomopathologic diagnosis].
F C Schmitt1, P A Kimaid, P F Campos
1Departamento de Patologia da Faculdade de Medicina de Botucatu, UNESP.
Revista Do Hospital Das Clinicas
|January 1, 1992
Summary
Immunohistochemical staining methods significantly aid in diagnosing medical specimens. This technique is crucial for confirming diagnoses and distinguishing between various cancers like carcinoma, lymphoma, and melanoma.
Area of Science:
- Pathology
- Immunohistochemistry
- Diagnostic Medicine
Background:
- Morphologic diagnosis relies on specimen examination.
- Immunohistochemistry utilizes antibodies to identify specific antigens in tissues.
- The diagnostic utility of these methods requires evaluation.
Purpose of the Study:
- To assess the value of immunohistochemical staining in morphologic diagnosis.
- To determine the impact of immunoperoxidase staining on diagnostic outcomes.
- To evaluate the contribution of immunohistochemistry in differentiating neoplastic entities.
Main Methods:
- Review of 949 pathology specimens from 1984-1989.
- Application of immunoperoxidase staining techniques (PAP or ABC).
- Analysis of diagnostic outcomes, including confirmation, definitive diagnosis, and contribution.
Main Results:
- Immunohistochemistry confirmed the main morphologic diagnosis in 49.3% of cases.
- Definitive diagnoses were established in 25.7% of cases with only differential diagnoses.
- Unsuspected diagnoses were rendered in 5.2% of cases, highlighting its diagnostic power.
- The technique proved particularly useful in distinguishing carcinoma, lymphoma, and melanoma.
Conclusions:
- Immunohistochemical methods provide essential information for definitive pathological diagnosis.
- This technique enhances diagnostic accuracy, especially in complex or undifferentiated cases.
- Immunohistochemistry is a valuable tool for differentiating between major tumor types.