Abstract
BACKGROUND. Inflammatory myofibroblastic tumor or inflammatory pseudotumor is an uncommon lesion reported in various organs and believed to be a non- neoplastic reactive inflammatory condition. The concept of benign lesion has been recently challenged from both clinical demonstration of recurrence and cytogenetic evidence of acquired clonal chromosomal abnormality. Because DNA aneuploidy can be a useful marker for neoplasia, we analyzed nuclear DNA content of these lesions using flow cytometry. METHODS. In this study, inflammatory myofibroblastic tumors from nine children were examined retrospectively by evaluating clinicopathologic features and ploidy. DNA ploidy status was analyzed by flow cytometry in nuclei isolated from paraffin-embedded tumor tissues. RESULTS. Three of the nine patients had local recurrence or distant metastases. Flow cytometric DNA analysis revealed five of the nine cases were diploid and four hyperdiploid (DNA indices 1.14, 1.16, 1.19, and 1.33). All lesions had a low S-phase fraction. Samples from the three subjects with clinical recurrence were all hyperdiploid. CONCLUSIONS. The present data indicate that flow cytometry identifies aneuploidy (hyperdiploidy) in approximately half of the cases of inflammatory myofibroblastic tumors. This feature appears to reflect a more aggressive biologic behavior. In addition to the reported cytogenetic abnormalities, our data suggest that inflammatory myofibroblastic tumor, generally considered a benign reactive inflammatory process, may evolve as a distinct, potentially malignant, lesion. Therefore, flow cytometric DNA analysis is a suitable tool to provide the clinician with both diagnostic and prognostic information and to individuate the most feasible therapeutic approach.
| Original language | English |
|---|---|
| Pages (from-to) | 778-784 |
| Number of pages | 7 |
| Journal | Cancer |
| Volume | 77 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Feb 15 1996 |
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Keywords
- aneuploidy
- DNA content
- flow cytometry
- inflammatory myofibroblastic tumor
- inflammatory pseudotumor
- pediatric neoplasia
ASJC Scopus subject areas
- Cancer Research
- Oncology
Cite this
Inflammatory myofibroblastic tumor (inflammatory pseudotumor) : DNA flow cytometric analysis of nine pediatric cases. / Biselli, Roberto; Ferlini, Cristiano; Fattorossi, Andrea; Boldrini, Renata; Bosman, Cesare.
In: Cancer, Vol. 77, No. 4, 15.02.1996, p. 778-784.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Inflammatory myofibroblastic tumor (inflammatory pseudotumor)
T2 - DNA flow cytometric analysis of nine pediatric cases
AU - Biselli, Roberto
AU - Ferlini, Cristiano
AU - Fattorossi, Andrea
AU - Boldrini, Renata
AU - Bosman, Cesare
PY - 1996/2/15
Y1 - 1996/2/15
N2 - BACKGROUND. Inflammatory myofibroblastic tumor or inflammatory pseudotumor is an uncommon lesion reported in various organs and believed to be a non- neoplastic reactive inflammatory condition. The concept of benign lesion has been recently challenged from both clinical demonstration of recurrence and cytogenetic evidence of acquired clonal chromosomal abnormality. Because DNA aneuploidy can be a useful marker for neoplasia, we analyzed nuclear DNA content of these lesions using flow cytometry. METHODS. In this study, inflammatory myofibroblastic tumors from nine children were examined retrospectively by evaluating clinicopathologic features and ploidy. DNA ploidy status was analyzed by flow cytometry in nuclei isolated from paraffin-embedded tumor tissues. RESULTS. Three of the nine patients had local recurrence or distant metastases. Flow cytometric DNA analysis revealed five of the nine cases were diploid and four hyperdiploid (DNA indices 1.14, 1.16, 1.19, and 1.33). All lesions had a low S-phase fraction. Samples from the three subjects with clinical recurrence were all hyperdiploid. CONCLUSIONS. The present data indicate that flow cytometry identifies aneuploidy (hyperdiploidy) in approximately half of the cases of inflammatory myofibroblastic tumors. This feature appears to reflect a more aggressive biologic behavior. In addition to the reported cytogenetic abnormalities, our data suggest that inflammatory myofibroblastic tumor, generally considered a benign reactive inflammatory process, may evolve as a distinct, potentially malignant, lesion. Therefore, flow cytometric DNA analysis is a suitable tool to provide the clinician with both diagnostic and prognostic information and to individuate the most feasible therapeutic approach.
AB - BACKGROUND. Inflammatory myofibroblastic tumor or inflammatory pseudotumor is an uncommon lesion reported in various organs and believed to be a non- neoplastic reactive inflammatory condition. The concept of benign lesion has been recently challenged from both clinical demonstration of recurrence and cytogenetic evidence of acquired clonal chromosomal abnormality. Because DNA aneuploidy can be a useful marker for neoplasia, we analyzed nuclear DNA content of these lesions using flow cytometry. METHODS. In this study, inflammatory myofibroblastic tumors from nine children were examined retrospectively by evaluating clinicopathologic features and ploidy. DNA ploidy status was analyzed by flow cytometry in nuclei isolated from paraffin-embedded tumor tissues. RESULTS. Three of the nine patients had local recurrence or distant metastases. Flow cytometric DNA analysis revealed five of the nine cases were diploid and four hyperdiploid (DNA indices 1.14, 1.16, 1.19, and 1.33). All lesions had a low S-phase fraction. Samples from the three subjects with clinical recurrence were all hyperdiploid. CONCLUSIONS. The present data indicate that flow cytometry identifies aneuploidy (hyperdiploidy) in approximately half of the cases of inflammatory myofibroblastic tumors. This feature appears to reflect a more aggressive biologic behavior. In addition to the reported cytogenetic abnormalities, our data suggest that inflammatory myofibroblastic tumor, generally considered a benign reactive inflammatory process, may evolve as a distinct, potentially malignant, lesion. Therefore, flow cytometric DNA analysis is a suitable tool to provide the clinician with both diagnostic and prognostic information and to individuate the most feasible therapeutic approach.
KW - aneuploidy
KW - DNA content
KW - flow cytometry
KW - inflammatory myofibroblastic tumor
KW - inflammatory pseudotumor
KW - pediatric neoplasia
UR - http://www.scopus.com/inward/record.url?scp=0030020615&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030020615&partnerID=8YFLogxK
U2 - 10.1002/(SICI)1097-0142(19960215)77:4<778::AID-CNCR25>3.0.CO;2-X
DO - 10.1002/(SICI)1097-0142(19960215)77:4<778::AID-CNCR25>3.0.CO;2-X
M3 - Article
C2 - 8616772
AN - SCOPUS:0030020615
VL - 77
SP - 778
EP - 784
JO - Cancer
JF - Cancer
SN - 0008-543X
IS - 4
ER -