| Autor: |
Martinez AP; Departments of Pathology and Laboratory Medicine.; Dermatology, Emory University., Zapata M; Department of Pathology and Laboratory Medicine, Northside Hospital, Atlanta, GA., North PE; Department of Pathology, Medical College of Wisconsin, Milwaukee, WI., Folpe AL; Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN., Weiss SW; Departments of Pathology and Laboratory Medicine. |
| Jazyk: |
angličtina |
| Zdroj: |
The American journal of surgical pathology [Am J Surg Pathol] 2020 Feb; Vol. 44 (2), pp. 271-279. |
| DOI: |
10.1097/PAS.0000000000001398 |
| Abstrakt: |
We report 21 cases of a distinctive and unique vascular tumor which we propose to be a pure lymphatic-type angiosarcoma characterized by architectural and growth characteristics of angiosarcoma, cytologic, and immunohistochemical features of lymphatic differentiation, a prominent lymphocytic infiltrate, and variable nuclear grade. Patients included 12 males and 9 females with a median age of 65 years (range: 32 to 95 y). Tumors involved the head and neck (n=11), lower extremities (n=5), trunk (n=4), and upper extremity (n=1) and were located superficially in the dermis and/or subcutis. Tumors were designated "low grade" (n=10) when the nuclear grade was low, and vascular channel formation was evident throughout but with multilayering of endothelium within the vessels. Cases were designated "high grade" (n=11) when nuclei appeared higher grade with more rounded contours and prominent nucleoli and when solid areas predominated over vascular channel formation. A striking feature of both groups was the presence of a dense, lymphocytic infiltrate with occasional germinal center formation. All cases strongly and diffusely expressed at least 1 lymphatic marker (21/21) with podoplanin (17/19) and Prox-1 (11/11) more commonly expressed than LYVE-1 (5/10). No consistent molecular alteration was identified. Follow-up on 17 patients (median: 41 mo, mean: 54 mo) showed 10 patients were alive without disease, 5 were alive with disease, 1 died of other cause, and 1 died of disease. Local recurrence developed in 9 cases and metastasis in 2 cases, although neither correlated with grade as defined. On the basis of clinical follow-up to date, the natural history of lymphatic-type angiosarcoma appears to be more favorable than other forms of cutaneous angiosarcoma. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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