AustralieFrV1, Main, Exploration, bibRecord, 007745

Melanocytic Tumors of Uncertain Malignant Potential: Results of a Tutorial Held at the XXIX Symposium of the International Society of Dermatopathology in Graz, October 2008

Identifieur interne : 007745 ( Main/Exploration ); précédent : 007744; suivant : 007746

Melanocytic Tumors of Uncertain Malignant Potential: Results of a Tutorial Held at the XXIX Symposium of the International Society of Dermatopathology in Graz, October 2008

Auteurs : Lorenzo Cerroni [Autriche] ; Raymond Barnhill [France] ; David Elder [États-Unis] ; Geoffrey Gottlieb [États-Unis] ; Peter Heenan [Australie] ; Heinz Kutzner [Allemagne] ; Philip E. Leboit [États-Unis] ; Martin Jr Mihm [États-Unis] ; Juan Rosai [Italie] ; Helmut Kerl [Autriche]

Source :

The American journal of surgical pathology [ 0147-5185 ] ; 2010.

RBID : Pascal:10-0145469

Descripteurs français

Pascal (Inist)
- Anatomopathologie, Mélanocyte, Malignité, Naevus de Spitz, International, Peau, Mélanome malin, Atypique, Naevus bleu.

English descriptors

KwdEn :
- Anatomic pathology, Atypical, Blue nevus, International, Malignancy, Malignant melanoma, Melanocyte, Skin, Spitz nevus.

Abstract

Several reports demonstrated the difficulties and lack of agreement in the histopathologic diagnosis of particular melanocytic tumors (atypical Spitz tumors, atypical blue nevi, deep penetrating nevi). These lesions are often referred to as "melanocytic tumors of uncertain malignant potential" (MELTUMP). We studied a large number of such tumors to find out whether repeatable histopathologic criteria for distinction of benign from malignant cases exist. Fifty-seven cases of MELTUMP were classified within 3 groups according to behavior as follows: (a) favorable (no evidence of metastatic disease after a follow-up of ≥ 5 y), (b) unfavorable (tumor-related death and/or large metastatic deposits in the lymph nodes and/or visceral metastases), (c) borderline (small nodal deposits of tumor cells ≤0.2mm). There were no significant differences in tumor thickness and presence or absence of ulceration between the different groups. The only 3 histopathologic criteria that were statistically different between the groups of favorable and unfavorable cases were presence of mitoses, mitoses near the base, and an inflammatory reaction, all of them found more frequently in cases with unfavorable behavior. The major outcome of this study of a series of "MELTUMPs" suggests as a preliminary observation that these lesions as a group exist and that they may be biologically different from conventional melanoma and benign melanocytic nevi. The terminology remains highly controversial, reflecting the uncertainty in classification and interpretation of these atypical melanocytic tumors.

Affiliations:

Allemagne, Australie, Autriche, France, Italie, États-Unis
Île-de-France
Paris

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Le document en format XML

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<front><div type="abstract" xml:lang="en">Several reports demonstrated the difficulties and lack of agreement in the histopathologic diagnosis of particular melanocytic tumors (atypical Spitz tumors, atypical blue nevi, deep penetrating nevi). These lesions are often referred to as "melanocytic tumors of uncertain malignant potential" (MELTUMP). We studied a large number of such tumors to find out whether repeatable histopathologic criteria for distinction of benign from malignant cases exist. Fifty-seven cases of MELTUMP were classified within 3 groups according to behavior as follows: (a) favorable (no evidence of metastatic disease after a follow-up of ≥ 5 y), (b) unfavorable (tumor-related death and/or large metastatic deposits in the lymph nodes and/or visceral metastases), (c) borderline (small nodal deposits of tumor cells ≤0.2mm). There were no significant differences in tumor thickness and presence or absence of ulceration between the different groups. The only 3 histopathologic criteria that were statistically different between the groups of favorable and unfavorable cases were presence of mitoses, mitoses near the base, and an inflammatory reaction, all of them found more frequently in cases with unfavorable behavior. The major outcome of this study of a series of "MELTUMPs" suggests as a preliminary observation that these lesions as a group exist and that they may be biologically different from conventional melanoma and benign melanocytic nevi. The terminology remains highly controversial, reflecting the uncertainty in classification and interpretation of these atypical melanocytic tumors.</div>
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Melanocytic Tumors of Uncertain Malignant Potential: Results of a Tutorial Held at the XXIX Symposium of the International Society of Dermatopathology in Graz, October 2008

Melanocytic Tumors of Uncertain Malignant Potential: Results of a Tutorial Held at the XXIX Symposium of the International Society of Dermatopathology in Graz, October 2008

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri