Case Number : Case 486 Posted By: Guest

[b]Phillip H McKee - Overseas Consultations (Cave Creek, Arizona, United States) Wrote:[/b]

Melanocytic lesions continue to be a problem for most of you. This is nothing more than a cellular blue nevus. There is no significant pleomorphism and I deliberately chose a field with two mitoses to catch out the unwary. Although I do not like the term "atypical" as applied to melanocytic lesions personally believing that in the overwhelming majority of cases one should be able to determine whether a lesion is a nevus or a melanoma, if you do use the term atypical cellular blue nevus, there is insufficient atypia. The presence of mitositic activity is anticipated in most cellular blue nevi.

[size=2]Submitted on 19/04/2012 18:41[/size] [b]Hazem Hamed - Department of Histopathology, Imperial College (London) Wrote:[/b]

There are no Wreath like multinucleated giant cells and Nucleoli are not so large. Also Clear cell sarcoma usualy affects younger age. Extremities (related to tendons and aponeurosis)are the prefered sites.

[size=2]Submitted on 19/04/2012 18:16[/size] [b]Eman El-Nabarawy - (Egypt) Wrote:[/b]

Clear cell sarcoma.

[size=2]Submitted on 19/04/2012 17:20[/size] [b]Marie MD - () Wrote:[/b]

clear cell sarcoma

[size=2]Submitted on 19/04/2012 16:34[/size] [b]Mona Abdel Halim - () Wrote:[/b]

Why not clear cell sarcoma, (melanoma of soft parts). Nests of clear cells separated by fibrous septa. Some melanin pigment.

[size=2]Submitted on 19/04/2012 16:03[/size] [b]Sasi Attili - (United Kingdom) Wrote:[/b]

Since the history says mass in the buttock, I would strongly consider a metastatic MM

[size=2]Submitted on 19/04/2012 14:32[/size] [b]Engin Sezer - (Istanbul) Wrote:[/b]

Malignant blue nevus based on high mitotic rate and pleomorphism.

[size=2]Submitted on 19/04/2012 14:31[/size] [b]Amira Tawdy - Cairo University (Egypt) Wrote:[/b]

Nevoid melanoma

[size=2]Submitted on 19/04/2012 13:36[/size] [b]Izzat Abdul-kadir - ST2 - York Hospital (UK) Wrote:[/b]

Melanoma.

[size=2]Submitted on 19/04/2012 12:30[/size] [b]A Bansal - BCU HB (North Wales) Wrote:[/b]

Atypical cellular blue naevus

[size=2]Submitted on 19/04/2012 11:50[/size] [b]Hazem Hamed - Department of Histopathology, Imperial College (London) Wrote:[/b]

Cellular blue nevus with mild atypia.

[size=2]Submitted on 19/04/2012 11:24[/size]