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Mancari R, Cioffi R, Magazzino F, Attademo L, Sant’angelo M, Taccagni G, Mangili G, Pignata S, Bergamini A. Dermatofibrosarcoma Protuberans of the Vulva: A Review of the MITO Rare Cancer Group. Cancers (Basel) 2024; 16:222. [PMID: 38201649 PMCID: PMC10777898 DOI: 10.3390/cancers16010222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/19/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
BACKGROUND Vulvar dermatofibrosarcoma protuberans is an extremely rare disease. Its rarity can hamper the quality of treatment; deeper knowledge is necessary to plan appropriate management. The purpose of this review is to analyse the data reported in the literature to obtain evidence regarding appropriate disease management. METHODS We made a systematic search of the literature, including the terms "dermatofibrosarcoma protuberans", "vulva", and "vulvar", alone or in combination. We selected articles published in English from two electronic databases, PubMed and MEDLINE, and we analysed their reference lists to include other potentially relevant studies. RESULTS We selected 39 articles, with a total of 68 cases reported; they were retrospective case reports and case series. Dermatofibrosarcoma protuberans of the vulva tends towards local recurrence; an early and timely pathological diagnosis, together with an appropriate surgical approach, are of utmost importance to ensure free margins and maximise the curative potential. CONCLUSIONS Even if this is an indolent disease and it generally shows a good prognosis, appropriate management may help in reducing the rate of local recurrences that may hamper patients' quality of life. Management by a multidisciplinary team is highly recommended.
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Affiliation(s)
- Rosanna Mancari
- Gynecologic Oncology Unit, IRCCS Regina Elena National Cancer Institute, 00144 Rome, Italy
| | - Raffaella Cioffi
- Department of Obstetrics and Gynaecology, San Raffaele Scientific Institute, 20132 Milan, Italy; (R.C.); (G.M.); (A.B.)
| | - Francescapaola Magazzino
- Complex Operating Unit Ginecologia E Ostetricia, Ospedale Civile Di San Dona’ Di Piave (Venezia), Aulss4 Veneto Orientale, 30027 San Donà di Piave, Italy;
| | | | - Miriam Sant’angelo
- Department of Surgical Pathology, San Raffaele Scientific Institute, 20132 Milan, Italy; (M.S.); (G.T.)
| | - Gianluca Taccagni
- Department of Surgical Pathology, San Raffaele Scientific Institute, 20132 Milan, Italy; (M.S.); (G.T.)
| | - Giorgia Mangili
- Department of Obstetrics and Gynaecology, San Raffaele Scientific Institute, 20132 Milan, Italy; (R.C.); (G.M.); (A.B.)
| | - Sandro Pignata
- Department of Urology and Gynecology, Istituto Nazionale Tumori IRCCS ‘Fondazione G Pascale’, 80144 Napoli, Italy;
| | - Alice Bergamini
- Department of Obstetrics and Gynaecology, San Raffaele Scientific Institute, 20132 Milan, Italy; (R.C.); (G.M.); (A.B.)
- Faculty of Medicine, Vita-Salute San Raffaele University, 20132 Milan, Italy
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2
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Dermatofibrosarcoma protuberans of the vulva: margins assessment and reconstructive options - a report of two cases. World J Surg Oncol 2014; 12:399. [PMID: 25547686 PMCID: PMC6389240 DOI: 10.1186/1477-7819-12-399] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 12/29/2014] [Indexed: 11/12/2022] Open
Abstract
Background Dermatofibrosarcoma Protuberans (DFSP) of the vulva is rare and oncologic surgery with free margins may lead to severe functional damage, requiring multidisciplinary approach regarding resection, margin assessment and reconstruction. Case Report Two cases of DFSP in vulva were treated in a single institution. A 28-year-old patient with an incisional biopsy in the vulvar region revealing DFSP underwent a partial vulvectomy with clitoris preservation. Pathological studies revealed free margins and reconstructive surgery was performed. This patient is disease free in a 40 months follow up. The other, a 57-year-old patient was also referred after an incomplete resection of a DFSP in the vulvar region. A 1-cm margim resection followed by Complete Circumferential and Peripheral Deep Margin Assessment (CCPDMA) was performed. Although the upper lateral margin was positive, it was possible to perform another wide local excision with preservation of the clitoris and primary closure. Conclusion DFSP of the vulva requires an accurate evaluation of margins, resections following oncological principles and reconstruction. Although being a very challenging lesion that usually implies difficult surgical management, if treated in a multidisciplinary environment, with surgical oncologists, experienced dermatopathologists and reconstructive surgeons can achieve good results. Even in difficult cases that presents with large lesions and compromising challenging areas, a complete oncologic resection can be performed minimizing functional damage for the patient. Electronic supplementary material The online version of this article (doi:10.1186/1477-7819-12-399) contains supplementary material, which is available to authorized users.
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Bogani G, Cromi A, Uccella S, Serati M, Casarin J, Cimetti L, Donadello N, Ghezzi F. Dermatofibrosarcoma protuberans of the vulva. J OBSTET GYNAECOL 2014; 35:209-10. [PMID: 25020209 DOI: 10.3109/01443615.2014.935726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- G Bogani
- Department of Obstetrics and Gynaecology, University of Insubria, Del Ponte Hospital , Varese , Italy
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4
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Hammonds LM, Hendi A. Dermatofibrosarcoma protuberans of the vulva treated using mohs micrographic surgery. Dermatol Surg 2010; 36:558-63. [PMID: 20402935 DOI: 10.1111/j.1524-4725.2010.01493.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- L Mark Hammonds
- Department of Dermatology, Mayo Clinic, Jacksonville, Florida, USA
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5
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Giacchero D, Maire G, Nuin PA, Berthier F, Ebran N, Carlotti A, Celerier P, Coindre JM, Esteve E, Fraitag S, Guillot B, Ranchere-Vince D, Saiag P, Terrier P, Lacour JP, Pedeutour F. No Correlation between the Molecular Subtype of COL1A1–PDGFB Fusion Gene and the Clinico-Histopathological Features of Dermatofibrosarcoma Protuberans. J Invest Dermatol 2010; 130:904-7. [DOI: 10.1038/jid.2009.338] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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6
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Dermatofibrosarcoma Protuberans of the Vulva: A Clinicopathologic and Immunohistochemical Study of 13 Cases. Am J Surg Pathol 2010; 34:393-400. [DOI: 10.1097/pas.0b013e3181cf7fc1] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Miscellaneous Pseudotumors and Mesenchymal Tumors of the Female Genital Tract. Surg Pathol Clin 2009; 2:755-83. [PMID: 26838778 DOI: 10.1016/j.path.2009.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Benign and malignant soft tissue tumors and pseudotumors can rarely arise anywhere in the female genital tract. Their pathologic features as well as behavior typically overlap with those described in tumors involving typical locations. However, due to their rarity, not infrequently these tumors represent a diagnostic challenge. Their diagnosis should be based on careful gross examination, thorough sampling, and morphologic evaluation, applying a selected immunohistochemical panel and molecular studies. Accurate classification of these tumors is important because their clinical behavior, prognosis, and therapy differ markedly. This article outlines several mesenchymal lesions reported in the female genital tract, encompassing recent histologic, immunohistochemical, and molecular findings, with special emphasis on problems in the differential diagnosis.
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8
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Abstract
A great diversity of chromosome alterations have been reported in mesenchymal tumors of the female genital tract, particularly in the uterus. Some of these alterations specifically identify a certain tumor type. Cytogenetic studies on benign proliferations have not only demonstrated clonal chromosome changes, but have also pointed out clustering of aberrations to specific chromosome regions. For example, distinct cytogenetic subgroups have been described in uterine leiomyomas with overlapping histologic features. These findings may ultimately correlate with specific parameters, such as course of the disease, response to therapy, and recurrence. Moreover, such data may give a clue to an understanding of the biologic basis for distinctive behavior of benign versus malignant mesenchymal proliferations. No specific chromosomal abnormalities have been described in malignant mesenchymal tumors, with the exception of low-grade endometrial stromal sarcomas. This article reviews the information currently available on genetic changes in mesenchymal tumors of the female genital tract and, more specifically, those reported in the uterus, where they have been more frequently studied.
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Affiliation(s)
- Paola Dal Cin
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Shapiro 5-058, Boston, MA, USA.
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10
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Jha P, Moosavi C, Fanburg-Smith JC. Giant cell fibroblastoma: an update and addition of 86 new cases from the Armed Forces Institute of Pathology, in honor of Dr. Franz M. Enzinger. Ann Diagn Pathol 2007; 11:81-8. [PMID: 17349565 DOI: 10.1016/j.anndiagpath.2006.12.010] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A quarter of a century ago at the International Academy of Pathology in Boston, Mass, Drs Enzinger and Shmookler's seminal abstract on giant cell fibroblastoma (GCF) included 20 GCFs on the back and thigh of mostly male children. These tumors involved dermis and subcutis, and had parallel fascicles of wavy uniform spindled cells with wiry collagen, dense sclerosis, and gaping spaces with scattered and rimming pleomorphic giant cells. EM suggested fibroblastic phenotype. All cases had benign behavior, but almost half recurred. The caveat was mistaking this tumor for a malignancy. In 1989, Drs Enzinger, Shmookler, and Weiss published this abstract as 28 cases from the AFIP (1960-1981), including 4 adults up to 55 years old. They proposed a relationship of this childhood tumor to dermatofibrosarcoma protuberans (DFSP). Since these original descriptions of GCF, there has been additional immunohistochemical and molecular support for a relationship between DFSP and GCF. We reviewed additional AFIP cases of GCF since 1981, in honor of Dr Enzinger. These new cases included 60 males and 26 females, whose ages ranged from 6 months to 62 years (median, 6 years; 62%, younger than 10 years; 77%, younger than 20 years; and only 10 patients were older than 40 years). Thirty-nine GCF cases with evaluable epidermis were observed to be protuberant, one with superficial ulceration. Most cases were dermal and subcutaneous, 3 purely dermal, and 5 involved superficial skeletal muscle. Almost all cases demonstrated a honeycomb pattern, and several, a parallel pattern of infiltration. Several cases spared adnexa. Pure GCF areas ranged from solid and collagenized to angiectoid and myxoid, the latter with small to large cystlike spaces. Most cases were relatively hypocellular, except one case with more atypia and mitotic activity. GCF demonstrated myoid whorls in 2 cases, a feature previously described in DFSP. Most remarkable is the peculiar perivascular lymphocytes in an onionskin pattern in GCF, not observed in DFSP. Furthermore, histologic intralesional hemorrhage seems to be common in GCF, particularly near the fascia. Fourteen of our 86 cases demonstrated 5% to 70% (median, 20%) dense nongiant cell storiform areas, interpreted as hybrid GCF-DFSP. Three of these cases demonstrated hypercellular DFSP. One hybrid case had fibrosarcomatous transformation. Two cases of pure GCF recurred as a hybrid tumor with DFSP areas, one of these with hypercellular DFSP. In all but one case, the DFSP was adjacent to GCF with an abrupt transition. Most cases studied were positive for CD34 (more intense in DFSP than relatively hypocellular GCF areas) and negative for smooth muscle actin, desmin, HMB-45, keratin, and S100 protein. GCF is exactly clinically and morphologically the same as Dr Enzinger and colleagues originally described it. Additional observations of marked perivascular and onionskin-like chronic inflammation and consistent hemorrhage may aid in the diagnosis of this previously well-described tumor. Collectively, we now have even more convincing morphologic, immunophenotypic, and molecular evidence that GCF is on a spectrum with DFSP.
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Affiliation(s)
- Prakash Jha
- Department of Orthopaedic and Soft Tissue Pathology, Armed Forces Institute of Pathology, Washington DC 20306-6000, USA
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11
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Fisher C. Low-grade sarcomas with CD34-positive fibroblasts and low-grade myofibroblastic sarcomas. Ultrastruct Pathol 2005; 28:291-305. [PMID: 15764578 DOI: 10.1080/019131290882187] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
A subset of low-grade fibrosarcomas is composed of CD34-positive spindle cells. These include dermatofibrosarcoma, its morphologic variants, and its associated fibrosarcoma, solitary fibrous tumor, hemangiopericytoma and their malignant counterparts, and some cases of myxoinflammatory fibroblastic sarcoma. Dermatofibrosarcoma and related lesions are characterized by a t(17;22)(q22;q13) rearrangement resulting in fusion of the genes COL1A (17q21-22) and PDGFB1 (22q13). Solitary fibrous tumor displays varying cellularity and fibrosis and a peripheral hemangiopericytomatous pattern; most tumors formerly called hemangiopericytoma are now subsumed into the category of solitary fibrous tumor, although a few strictly defined examples are recognized; however, these are probably not composed of pericytes. Myofibroblastic malignancies are best identified by electron microscopy, with which varying degrees of differentiation, including the presence of fibronexus junctions, can be identified. Low-grade sarcomas showing myofibroblastic differentiation include myofibrosarcomas and inflammatory myofibroblastic tumors. Myofibrosarcomas are spindle cell neoplasms that occur in children or adults in the head and neck, trunk, and extremities as infiltrative neoplasms and that display a fascicular or fasciitis-like pattern with focal nuclear atypia and variable expression of myoid antigens. These sarcomas are prone to recurrence and a small number metastasize. Inflammatory myofibroblastic tumor (synonymous with inflammatory fibrosarcoma) is a neoplasm arising predominantly in childhood, and frequently in intraabdominal locations. It has spindle cells in fascicular, fasciitis-like and sclerosing patterns, with heavy chronic inflammation including abundant plasma cells. Many IMT have clonal chromosomal abnormalities involving 2p22-24, and fusion of the ALK gene with tropomyosin 3 (TPM3-ALK) or tropomyosin 4 (TPM4-ALK) is found in a subset.
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Ohlinger R, Kühl A, Schwesinger G, Bock P, Lorenz G, Köhler G. Dermatofibrosarcoma protuberans of the vulva. Acta Obstet Gynecol Scand 2004; 83:685-6. [PMID: 15225196 DOI: 10.1111/j.0001-6349.2004.0226b.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ralf Ohlinger
- Department of Obstetrics and Gynecology, Ernst-Moritz-Arndt-University, Greifswald, Germany
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13
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Sirvent N, Maire G, Pedeutour F. Genetics of dermatofibrosarcoma protuberans family of tumors: from ring chromosomes to tyrosine kinase inhibitor treatment. Genes Chromosomes Cancer 2003; 37:1-19. [PMID: 12661001 DOI: 10.1002/gcc.10202] [Citation(s) in RCA: 216] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Dermatofibrosarcoma protuberans (DP) is a rare, slow-growing, infiltrating dermal neoplasm of intermediate malignancy, made up of spindle-shaped tumor cells often positive for CD34. The preferred treatment is wide surgical excision with pathologically negative margins. At the cytogenetic level, DP cells are characterized by either supernumerary ring chromosomes, which have been shown by using fluorescence in situ hybridization techniques to be derived from chromosome 22 and to contain low-level amplified sequences from 17q22-qter and 22q10-q13.1, or t(17;22), that are most often unbalanced. Both the rings and linear der(22) contain a specific fusion of COL1A1 with PDGFB. Similar to other tumors, the COL1A1-PDGFB fusion is occasionally cryptic, associated with complex chromosomal rearrangements. Although rings have been mainly observed in adults, translocations have been reported in all pediatric cases. DP is therefore a unique example of a tumor in which (i) the same molecular event occurs either on rings or linear translocation derivatives, (ii) the chromosomal abnormalities display an age-related pattern, and (iii) the presence of the specific fusion gene is associated with the gain of chromosomal segments, probably taking advantage of gene dosage effects. In all DP cases that underwent molecular investigations, the breakpoint localization in PDGFB was found to be remarkably constant, placing exon 2 under the control of the COL1A1 promoter. In contrast, the COL1A1 breakpoint was found to be variably located within the exons of the alpha-helical coding region (exons 6-49). No preferential COL1A1 breakpoint and no correlation between the breakpoint location and the age of the patient or any clinical or histological particularity have been described. The COL1A1-PDGFB fusion is detectable by multiplex RT-PCR with a combination of forward primers designed from a variety of COL1A1 exons and one reverse primer from PDGFB exon 2. Recent studies have determined the molecular identity of "classical" DP, giant cell fibroblastoma, Bednar tumor, adult superficial fibrosarcoma, and the granular cell variant of DP. In approximately 8% of DP cases, the COL1A1-PDGFB fusion is not found, suggesting that genes other than COL1A1 or PDGFB might be involved in a subset of cases. It has been proposed that PDGFB acts as a mitogen in DP cells by autocrine stimulation of the PDGF receptor. It is encouraging that inhibitory effects of the PDGF receptor tyrosine kinase antagonist imatinib mesylate have been demonstrated in vivo; such targeted therapies might be warranted in the near future for treatment of the few DP cases not manageable by surgery.
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Affiliation(s)
- Nicolas Sirvent
- Service de Pédiatrie, Centre hospitalier universitaire de Nice, Nice, France
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14
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Gökden N, Dehner LP, Zhu X, Pfeifer JD. Dermatofibrosarcoma protuberans of the vulva and groin: detection of COL1A1-PDGFB fusion transcripts by RT-PCR. J Cutan Pathol 2003; 30:190-5. [PMID: 12641779 DOI: 10.1034/j.1600-0560.2003.00037.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Dermatofibrosarcoma protuberans (DFSP) is an uncommon infiltrative tumor of the dermis with characteristic cytogenetic features, specifically the translocation t(17;22)(q22;q13) which often manifests as a supernumerary ring chromosome r(17;22). The translocation results in the fusion of two genes, collagen type I alpha 1(COL1A1) and platelet-derived growth factor B-chain (PDGFB). The trunk and extremities are the anatomic sites of predilection for DFSP, whereas the vulva and groin are quite uncommon sites of involvement. METHODS This investigation evaluated seven DFSPs (four vulvar and three groin) for the presence of COL1A1-PDGFB fusion transcripts by reverse transcriptase-polymerase chain reaction (RT-PCR), using archival formalin-fixed, paraffin-embedded tissue. RESULTS Six of seven cases (three vulvar, three groin) contained a COL1A1-PDGFB fusion transcript. Sequence analysis of the PCR products revealed that the break-point of the COL1A1 gene was located after exon 40 in two patients, after exon 42 in one patient, after exon 44 in one patient, and after exon 47 in two patients; the break-point in the PDGFB gene was before exon 2 in all cases. No fusion transcript could be amplified in one case. CONCLUSIONS As in DFSP at other sites, COL1A1- PDGFB chimeric fusion transcripts are present in vulvar and groin DFSP. The transcripts can be detected in formalin-fixed, paraffin-embedded tumor tissues, and have the same general pattern of exon boundaries as in DFSP at other sites.
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Affiliation(s)
- Neriman Gökden
- Lauren V. Ackerman Laboratory of Surgical Pathology, Barnes-Jewish Hospital, Washington University Medical Center, St Louis, MO, USA.
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15
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Sandberg AA, Bridge JA. Updates on the cytogenetics and molecular genetics of bone and soft tissue tumors. Dermatofibrosarcoma protuberans and giant cell fibroblastoma. CANCER GENETICS AND CYTOGENETICS 2003; 140:1-12. [PMID: 12550751 DOI: 10.1016/s0165-4608(02)00848-8] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
MESH Headings
- Adult
- Chromosomes, Human, Pair 17/ultrastructure
- Chromosomes, Human, Pair 22/ultrastructure
- Collagen/genetics
- Collagen Type I
- Collagen Type I, alpha 1 Chain
- Dermatofibrosarcoma/diagnosis
- Dermatofibrosarcoma/genetics
- Dermatofibrosarcoma/pathology
- Diagnosis, Differential
- Female
- Fibrosarcoma/diagnosis
- Fibrosarcoma/genetics
- Fibrosarcoma/pathology
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Giant Cell Tumors/diagnosis
- Giant Cell Tumors/genetics
- Giant Cell Tumors/pathology
- Histiocytoma, Benign Fibrous/diagnosis
- Histiocytoma, Benign Fibrous/genetics
- Histiocytoma, Benign Fibrous/pathology
- Humans
- In Situ Hybridization, Fluorescence
- Male
- Middle Aged
- Oligonucleotide Array Sequence Analysis
- Oncogene Proteins, Fusion/genetics
- Proto-Oncogene Proteins c-sis/genetics
- Ring Chromosomes
- Skin Neoplasms/diagnosis
- Skin Neoplasms/genetics
- Skin Neoplasms/pathology
- Translocation, Genetic
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Affiliation(s)
- Avery A Sandberg
- Department of DNA Diagnostics, St. Joseph's Hospital and Medical Center, 350 West Thomas Road, Phoenix, AZ 85013, USA.
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16
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Maire G, Pedeutour F, Mrózek K, Ryś J, Iliszko M, Limon J. COLIA1-PDGFB gene fusion in dermatofibrosarcoma protuberans. molecular analysis of a case with an unusual large marker containing sequences from chromosomes 7, 8, 17, 21, and 22. CANCER GENETICS AND CYTOGENETICS 2002; 135:197-9. [PMID: 12127408 DOI: 10.1016/s0165-4608(01)00653-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
MESH Headings
- Chromosome Aberrations
- Chromosomes, Human/genetics
- Chromosomes, Human/ultrastructure
- Chromosomes, Human, Pair 17/genetics
- Chromosomes, Human, Pair 21/genetics
- Chromosomes, Human, Pair 22/genetics
- Chromosomes, Human, Pair 7/genetics
- Chromosomes, Human, Pair 8/genetics
- Dermatofibrosarcoma/genetics
- Exons/genetics
- Humans
- Oncogene Proteins, Fusion/genetics
- Reverse Transcriptase Polymerase Chain Reaction
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17
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Maire G, Martin L, Michalak-Provost S, Gattas GJF, Turc-Carel C, Lorette G, Pedeutour F. Fusion of COL1A1 exon 29 with PDGFB exon 2 in a der(22)t(17;22) in a pediatric giant cell fibroblastoma with a pigmented Bednar tumor component. Evidence for age-related chromosomal pattern in dermatofibrosarcoma protuberans and related tumors. CANCER GENETICS AND CYTOGENETICS 2002; 134:156-61. [PMID: 12034531 DOI: 10.1016/s0165-4608(01)00617-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In contrast with classic dermatofibrosarcoma protuberans (DP), genetic information about the juvenile or pigmented variant forms of DP, so-called giant cell fibroblastoma (GCF) and Bednar tumor (BT), is limited. In the sole karyotyped case of BT a supernumerary ring containing chromosomes 17 and 22 sequences, similar to DP rings, was reported, whereas in three GCF cases, t(17;22) or der(22)t(17;22) with COL1A1-PDGFB fusion involving exons 11, 40, and 47, respectively, have been described. Here, we report the first cytogenetic and molecular analysis of a tumor from a 5-year-old child that contained both GCF and BT components. The karyotype and molecular analyses confirmed the common histogenetic origin between DP, GCF, and BT in showing the presence of a der(22)t(17;22) fusing the COL1A1 exon 29 to PDGFB exon 2. Because COL1A1 exon 29 has been involved previously in gene fusion with PDGFB exon 2 in several cases of adult or infantile DP presenting either t(17;22) or ring chromosomes, our results support the concept that DP, GCF, and BT are morphologic variants of a same entity, rather than distinct tumors. Of interest, our findings give prominence to the relation between patient age and the chromosomal rearrangement pattern in DP and related tumors. Whereas only a few adult DP cases presented with translocations, all the infantile cases, either DP, GCF, or mixed BT-GCF, as shown here, contained translocation derivatives but not ring chromosomes. All the ring chromosomes were observed in adult cases. With respect to cytogenetic studies, DP, GCF, and BT appear to be a unique model for age-related chromosomal rearrangement progression.
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MESH Headings
- Adolescent
- Aging/physiology
- Base Sequence
- Carcinoma, Giant Cell/genetics
- Carcinoma, Giant Cell/pathology
- Child
- Child, Preschool
- Chromosomes, Human, Pair 17/genetics
- Chromosomes, Human, Pair 22/genetics
- Collagen/genetics
- Collagen Type I
- Collagen Type I, alpha 1 Chain
- Exons/genetics
- Genes, sis/genetics
- Humans
- In Situ Hybridization, Fluorescence
- Infant, Newborn
- Male
- Oncogene Proteins, Fusion/genetics
- Reverse Transcriptase Polymerase Chain Reaction
- Ring Chromosomes
- Skin Neoplasms/genetics
- Skin Neoplasms/pathology
- Translocation, Genetic/genetics
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Affiliation(s)
- Georges Maire
- UF Recherche Clinique 952, Laboratoire de Génétique, Université de Nice-Sophia Antipolis, CHU de Nice, 06202 Nice, France
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Nishio J, Iwasaki H, Ohjimi Y, Ishiguro M, Isayama T, Naito M, Iwashita A, Kikuchi M. Overrepresentation of 17q22-qter and 22q13 in dermatofibrosarcoma protuberans but not in dermatofibroma: a comparative genomic hybridization study. CANCER GENETICS AND CYTOGENETICS 2002; 132:102-8. [PMID: 11850069 DOI: 10.1016/s0165-4608(01)00546-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Histopathological differentiation between dermatofibrosarcoma protuberans (DFSP) and dermatofibroma (DF) is often difficult, because both neoplasms share some clinical features and the presence of a storiform pattern. In the present study, we investigated the usefulness of comparative genomic hybridization (CGH) in the diagnosis of these entities by examining 12 DFSP and 12 DF cases. The most frequent DNA sequence copy number changes detected in 10 (83%) of 12 DFSP cases (mean, 1.9 aberrations/tumor; range, 0-3) consisted of gains of 17q22-qter (10 tumors), 22q13 (nine tumors), and 8q24.1-qter (three tumors). High-level amplification, which was detected in three tumors, was seen only in chromosome 17, with 17q23-q25 as the minimal common region. Loss of DNA sequences was not found in DFSP cases. In contrast, two (17%) of the 12 DF cases (mean, 0.5 aberrations/tumor; range, 0-4) showed DNA sequence copy number changes, although recurrent gains and losses and high-level amplifications were not observed. Gains were more common than losses in DF. Overrepresentation of 17q and 22q sequences was a common finding in DFSP but not in DF. Thus, CGH seems to be useful for distinguishing DFSP from DF in most cases.
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Affiliation(s)
- Jun Nishio
- Department of Pathology, School of Medicine, Fukuoka University, Fukuoka, Japan.
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Mrózek K, Iliszko M, Ryś J, Babińska M, Niezabitowski A, Bloomfield CD, Limon J. Spectral karyotyping reveals 17;22 fusions in a cytogenetically atypical dermatofibrosarcoma protuberans with a large marker chromosome as a sole abnormality. Genes Chromosomes Cancer 2001; 31:182-6. [PMID: 11319805 DOI: 10.1002/gcc.1131] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The presence of an extra ring chromosome containing material from 17q and 22q, or, less frequently, a t(17;22)(q22;q13), is a cytogenetic hallmark of dermatofibrosarcoma protuberans (DFSP). However, occasionally tumors with other, atypical karyotypes are encountered. We describe a case of recurrent DFSP without a ring chromosome or a t(17;22) on standard cytogenetic analysis. In all cells analyzed by G-banding, an additional, large marker chromosome was present as a sole abnormality. This chromosome apparently included chromosome 8 or the 8q arm, but the origin of its remaining part could not be determined with certainty. To characterize further the abnormal chromosome, we applied spectral karyotyping (SKY). SKY confirmed the presence of an extra chromosome 8 or arm 8q in the marker and showed that its remaining part was composed of segments from chromosomes 7, 17, 21, and 22, with two copies of a 17;22 fusion. Our results and the literature data suggest that, in addition to a specific 17;22 fusion, amplification of material from chromosomes 17, 22, 8, 5, 7, and 21 may play a role in DFSP development and/or progression. Furthermore, our case demonstrates the usefulness of SKY in detection of a diagnostically relevant 17;22 fusion in DFSP patients who have unusual karyotypic features.
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Affiliation(s)
- K Mrózek
- Division of Hematology and Oncology, and the Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio, USA.
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Letson GD, Muro-Cacho CA. Genetic and molecular abnormalities in tumors of the bone and soft tissues. Cancer Control 2001; 8:239-51. [PMID: 11378650 DOI: 10.1177/107327480100800304] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Malignant transformation requires the accumulation of multiple genetic alterations such as chromosomal abnormalities, oncogene activation, loss of tumor suppressor genes, or abnormalities in genes that control DNA repair and genomic instability. Sarcomas are a heterogeneous group of malignant mesenchymal tumors of difficult histologic classification and strong genetic predisposition. This article provides a comprehensive review of the cytogenetic abnormalities observed in bone and soft-tissue tumors, emphasizing known downstream molecular changes that may play a role in oncogenesis. METHODS The database of the National Library of Medicine was searched for literature relating to genetic and molecular mechanisms in sarcomas in general and in each of the main tumor entities. RESULTS Recent techniques in chromosome analysis and molecular cytogenetics have improved our ability to characterize genetic changes in mesenchymal tumors. Some changes are so characteristic as to be virtually pathognomonic of particular histologic types, while others are complex, difficult to characterize, and of unknown relevance to pathogenesis. The implications to the cell of some of these abnormalities are now being recognized. CONCLUSIONS The study of sarcomas will benefit from the information derived from genetic studies and translational research. The human genome project and new methodologies, such as computer-based DNA microarray, may help in the histogenetic classification of sarcomas and in the identification of molecular targets for therapy.
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Affiliation(s)
- G D Letson
- Interdisciplinary Oncology Program, H. Lee Moffitt Cancer Center and Research Institute at the University of South Florida, Tampa 33612, USA
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Nielsen GP, Young RH. Mesenchymal tumors and tumor-like lesions of the female genital tract: a selective review with emphasis on recently described entities. Int J Gynecol Pathol 2001; 20:105-27. [PMID: 11293156 DOI: 10.1097/00004347-200104000-00002] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The diverse mesenchymal tumors and tumor-like lesions that occur within the female genital tract include a number of lesions that have only been recently characterized and others about which there is new information. In this group are the aggressive angiomyxoma, angiomyofibroblastoma, and cellular angiofibroma. Criteria for the distinction of these lesions are reviewed, as are the pathologic features of prognostic significance in assessing smooth muscle tumors of the vulva. The diagnostic problems that the epithelioid variant of smooth muscle tumors, both benign and malignant, may pose when they occur in various areas of the genital tract are discussed, particularly with regard to problems encountered in the ovary, a site where the diagnosis often is not considered. Recent information expanding the morphologic spectrum of fibroepithelial polyps of the genital tract is presented, and important non-neoplastic entities, including nodular fasciitis and the postoperative spindle cell nodule, are reviewed. Mesenchymal tumors of the various types seen in the soft tissues may be encountered anywhere in the female genital tract and have been the subject of particular recent interest in the ovary; issues relevant to differential diagnosis are reviewed.
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Affiliation(s)
- G P Nielsen
- James Homer Wright Pathology Laboratories, Massachusetts General Hospital, Department of Pathology, Fruit Street, Boston, MA 02114, USA
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