Calretinin staining pattern aids in the differentiation of mesothelioma from adenocarcinoma in serous effusions

David C. Chhieng, Herman Yee, Dawn Schaefer, Joan F. Cangiarella, Jaishree Jagirdar, Luis A. Chiriboga, Jean Marc Cohen

Research output: Contribution to journalArticle

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Abstract

BACKGROUND. The differentiation between malignant mesothelioma and adenocarcinoma based on morphology alone can be a diagnostic challenge. The majority of the available antibodies recognize molecules expressed by adenocarcinoma whereas to the authors' knowledge specific markers for mesothelial cells are lacking. Calretinin, a calcium-binding protein, has been reported to be a selective marker for mesothelioma and largely is absent from adenocarcinoma on histologic material. The results with cytologic preparations have been inconsistent. METHODS. To evaluate the specificity of calretinin in differentiating mesothelioma from adenocarcinoma in cytologic preparations, 21 paraffin embedded cells blocks of serous effusions from 15 patients with metastatic adenocarcinoma and 16 cell blocks from 9 patients with malignant mesothelioma were stained with a monoclonal antibody against calretinin. The immunoreactivity was evaluated blindly by two observers. Positive staining was defined as nuclear and cytoplasmic staining with or without intense membranous decoration. The former resulted in a characteristic 'fried egg' appearance. RESULTS. Calretinin staining was positive in all but 2 cases of mesothelioma (14 of 16 cases; 87.5%). The latter contained predominantly spindle-shaped neoplastic mesothelial cells in the cell block preparations. All adenocarcinoma specimens were classified as negative for calretinin staining; 9 (42.9%) lacked any immunoreactivity and 12 (57.1%) showed weak, sparse, coarse, granular cytoplasmic staining without nuclear or membranous staining. Benign reactive mesothelial cells, when observed in association with adenocarcinoma, also showed the characteristic 'fried egg' appearance. The difference in the staining pattern of calretinin between cells of mesothelial origin and adenocarcinoma cells was statistically significant. CONCLUSIONS. Calretinin is a useful marker in differentiating mesothelioma of the epithelial type from adenocarcinoma in serous effusions. The 'fried-egg' appearance or cytoplasmic and nuclear staining pattern is characteristic of cells of mesothelial origin. (C) 2000 American Cancer Society.

Original languageEnglish (US)
Pages (from-to)194-200
Number of pages7
JournalCancer
Volume90
Issue number3
DOIs
StatePublished - Jun 25 2000
Externally publishedYes

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Calbindin 2
Mesothelioma
Adenocarcinoma
Staining and Labeling
Ovum
Negative Staining
Calcium-Binding Proteins
Paraffin
Monoclonal Antibodies

Keywords

  • Adenocarcinoma
  • Calretinin
  • Immunocytochemistry
  • Mesothelioma
  • Serous effusion

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Chhieng, D. C., Yee, H., Schaefer, D., Cangiarella, J. F., Jagirdar, J., Chiriboga, L. A., & Cohen, J. M. (2000). Calretinin staining pattern aids in the differentiation of mesothelioma from adenocarcinoma in serous effusions. Cancer, 90(3), 194-200. https://doi.org/10.1002/1097-0142(20000625)90:3<194::AID-CNCR8>3.0.CO;2-K

Calretinin staining pattern aids in the differentiation of mesothelioma from adenocarcinoma in serous effusions. / Chhieng, David C.; Yee, Herman; Schaefer, Dawn; Cangiarella, Joan F.; Jagirdar, Jaishree; Chiriboga, Luis A.; Cohen, Jean Marc.

In: Cancer, Vol. 90, No. 3, 25.06.2000, p. 194-200.

Research output: Contribution to journalArticle

Chhieng, DC, Yee, H, Schaefer, D, Cangiarella, JF, Jagirdar, J, Chiriboga, LA & Cohen, JM 2000, 'Calretinin staining pattern aids in the differentiation of mesothelioma from adenocarcinoma in serous effusions', Cancer, vol. 90, no. 3, pp. 194-200. https://doi.org/10.1002/1097-0142(20000625)90:3<194::AID-CNCR8>3.0.CO;2-K
Chhieng, David C. ; Yee, Herman ; Schaefer, Dawn ; Cangiarella, Joan F. ; Jagirdar, Jaishree ; Chiriboga, Luis A. ; Cohen, Jean Marc. / Calretinin staining pattern aids in the differentiation of mesothelioma from adenocarcinoma in serous effusions. In: Cancer. 2000 ; Vol. 90, No. 3. pp. 194-200.
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abstract = "BACKGROUND. The differentiation between malignant mesothelioma and adenocarcinoma based on morphology alone can be a diagnostic challenge. The majority of the available antibodies recognize molecules expressed by adenocarcinoma whereas to the authors' knowledge specific markers for mesothelial cells are lacking. Calretinin, a calcium-binding protein, has been reported to be a selective marker for mesothelioma and largely is absent from adenocarcinoma on histologic material. The results with cytologic preparations have been inconsistent. METHODS. To evaluate the specificity of calretinin in differentiating mesothelioma from adenocarcinoma in cytologic preparations, 21 paraffin embedded cells blocks of serous effusions from 15 patients with metastatic adenocarcinoma and 16 cell blocks from 9 patients with malignant mesothelioma were stained with a monoclonal antibody against calretinin. The immunoreactivity was evaluated blindly by two observers. Positive staining was defined as nuclear and cytoplasmic staining with or without intense membranous decoration. The former resulted in a characteristic 'fried egg' appearance. RESULTS. Calretinin staining was positive in all but 2 cases of mesothelioma (14 of 16 cases; 87.5{\%}). The latter contained predominantly spindle-shaped neoplastic mesothelial cells in the cell block preparations. All adenocarcinoma specimens were classified as negative for calretinin staining; 9 (42.9{\%}) lacked any immunoreactivity and 12 (57.1{\%}) showed weak, sparse, coarse, granular cytoplasmic staining without nuclear or membranous staining. Benign reactive mesothelial cells, when observed in association with adenocarcinoma, also showed the characteristic 'fried egg' appearance. The difference in the staining pattern of calretinin between cells of mesothelial origin and adenocarcinoma cells was statistically significant. CONCLUSIONS. Calretinin is a useful marker in differentiating mesothelioma of the epithelial type from adenocarcinoma in serous effusions. The 'fried-egg' appearance or cytoplasmic and nuclear staining pattern is characteristic of cells of mesothelial origin. (C) 2000 American Cancer Society.",
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T1 - Calretinin staining pattern aids in the differentiation of mesothelioma from adenocarcinoma in serous effusions

AU - Chhieng, David C.

AU - Yee, Herman

AU - Schaefer, Dawn

AU - Cangiarella, Joan F.

AU - Jagirdar, Jaishree

AU - Chiriboga, Luis A.

AU - Cohen, Jean Marc

PY - 2000/6/25

Y1 - 2000/6/25

N2 - BACKGROUND. The differentiation between malignant mesothelioma and adenocarcinoma based on morphology alone can be a diagnostic challenge. The majority of the available antibodies recognize molecules expressed by adenocarcinoma whereas to the authors' knowledge specific markers for mesothelial cells are lacking. Calretinin, a calcium-binding protein, has been reported to be a selective marker for mesothelioma and largely is absent from adenocarcinoma on histologic material. The results with cytologic preparations have been inconsistent. METHODS. To evaluate the specificity of calretinin in differentiating mesothelioma from adenocarcinoma in cytologic preparations, 21 paraffin embedded cells blocks of serous effusions from 15 patients with metastatic adenocarcinoma and 16 cell blocks from 9 patients with malignant mesothelioma were stained with a monoclonal antibody against calretinin. The immunoreactivity was evaluated blindly by two observers. Positive staining was defined as nuclear and cytoplasmic staining with or without intense membranous decoration. The former resulted in a characteristic 'fried egg' appearance. RESULTS. Calretinin staining was positive in all but 2 cases of mesothelioma (14 of 16 cases; 87.5%). The latter contained predominantly spindle-shaped neoplastic mesothelial cells in the cell block preparations. All adenocarcinoma specimens were classified as negative for calretinin staining; 9 (42.9%) lacked any immunoreactivity and 12 (57.1%) showed weak, sparse, coarse, granular cytoplasmic staining without nuclear or membranous staining. Benign reactive mesothelial cells, when observed in association with adenocarcinoma, also showed the characteristic 'fried egg' appearance. The difference in the staining pattern of calretinin between cells of mesothelial origin and adenocarcinoma cells was statistically significant. CONCLUSIONS. Calretinin is a useful marker in differentiating mesothelioma of the epithelial type from adenocarcinoma in serous effusions. The 'fried-egg' appearance or cytoplasmic and nuclear staining pattern is characteristic of cells of mesothelial origin. (C) 2000 American Cancer Society.

AB - BACKGROUND. The differentiation between malignant mesothelioma and adenocarcinoma based on morphology alone can be a diagnostic challenge. The majority of the available antibodies recognize molecules expressed by adenocarcinoma whereas to the authors' knowledge specific markers for mesothelial cells are lacking. Calretinin, a calcium-binding protein, has been reported to be a selective marker for mesothelioma and largely is absent from adenocarcinoma on histologic material. The results with cytologic preparations have been inconsistent. METHODS. To evaluate the specificity of calretinin in differentiating mesothelioma from adenocarcinoma in cytologic preparations, 21 paraffin embedded cells blocks of serous effusions from 15 patients with metastatic adenocarcinoma and 16 cell blocks from 9 patients with malignant mesothelioma were stained with a monoclonal antibody against calretinin. The immunoreactivity was evaluated blindly by two observers. Positive staining was defined as nuclear and cytoplasmic staining with or without intense membranous decoration. The former resulted in a characteristic 'fried egg' appearance. RESULTS. Calretinin staining was positive in all but 2 cases of mesothelioma (14 of 16 cases; 87.5%). The latter contained predominantly spindle-shaped neoplastic mesothelial cells in the cell block preparations. All adenocarcinoma specimens were classified as negative for calretinin staining; 9 (42.9%) lacked any immunoreactivity and 12 (57.1%) showed weak, sparse, coarse, granular cytoplasmic staining without nuclear or membranous staining. Benign reactive mesothelial cells, when observed in association with adenocarcinoma, also showed the characteristic 'fried egg' appearance. The difference in the staining pattern of calretinin between cells of mesothelial origin and adenocarcinoma cells was statistically significant. CONCLUSIONS. Calretinin is a useful marker in differentiating mesothelioma of the epithelial type from adenocarcinoma in serous effusions. The 'fried-egg' appearance or cytoplasmic and nuclear staining pattern is characteristic of cells of mesothelial origin. (C) 2000 American Cancer Society.

KW - Adenocarcinoma

KW - Calretinin

KW - Immunocytochemistry

KW - Mesothelioma

KW - Serous effusion

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