Collision tumor composed of Merkel cell carcinoma and lentigo maligna melanoma

2009 ◽  
Vol 2009 ◽  
pp. 57-58
Author(s):  
D.M. Jukic
Keyword(s):  
Cell Carcinoma ◽  
Merkel Cell Carcinoma ◽  
Collision Tumor ◽  
Merkel Cell ◽  
Lentigo Maligna ◽  
Lentigo Maligna Melanoma

Collision tumor composed of Merkel cell carcinoma and lentigo maligna melanoma

2007 ◽  
Vol 0 (0) ◽  
pp. 070816180549012-???
Author(s):  
Seth B. Forman ◽  
Dennis A. Vidmar ◽  
Tammie C. Ferringer
Keyword(s):  
Cell Carcinoma ◽  
Merkel Cell Carcinoma ◽  
Collision Tumor ◽  
Merkel Cell ◽  
Lentigo Maligna ◽  
Lentigo Maligna Melanoma

Angiosarcoma in Collision With a Merkel Cell Carcinoma: Case Report and Literature Review

2019 ◽  
Vol 28 (3) ◽  
pp. 325-329
Author(s):  
Sean Hacking ◽  
Hector Chavaria ◽  
Leonard Khan ◽  
Kasturi Das
Keyword(s):  
Radiation Therapy ◽  
Cell Carcinoma ◽  
Merkel Cell Carcinoma ◽  
Collision Tumor ◽  
Molecular Profile ◽  
Rare Entity ◽  
Merkel Cell ◽  
Elderly Males ◽  
History Of ◽  
Rare Malignancy

Merkel cell carcinoma (MCC) is a rare entity that most commonly arises from the skin. Angiosarcoma (AS) is a rare malignancy with a predilection for elderly males, has endothelial differentiation and a notoriously poor prognosis despite aggressive therapy. Herein, we report an angiosarcoma colliding with a MCC, in a patient with a past medical history of squamous cell carcinoma, status-post radiation therapy. More specifically, our case represents a collision tumor, a rare entity composed of two histologically distinct neoplasms which coincide together at the same location. This case represents the first documented report of such a presentation. With that being said, its clinical course, prognosis, pathogenesis, and molecular profile, currently remains unclear. Importantly, neoplasms are increasingly being found to be associated with radiation therapy, of which our patient had received. Ultimately, however, with the lack of c-MYC immunohistochemical staining, and a short duration between radiation exposure and presentation, the AS in our case was likely coincidental.

A Collision Tumor Involving Basal Cell Carcinoma and Lentigo Maligna Melanoma

2005 ◽  
Vol 27 (4) ◽  
pp. 319-321 ◽  
Author(s):  
Annie Belisle ◽  
Marie-Sophie Gautier ◽  
Farida Ghozali ◽  
Fran??oise Plantier ◽  
Janine Wechsler
Keyword(s):  
Basal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Basal Cell ◽  
Collision Tumor ◽  
Lentigo Maligna ◽  
Lentigo Maligna Melanoma
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