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Periocular Desmoplastic Malignant Melanoma and Orbital Invasion With Uncontrollable Disease: A Case Report.
Cureus
May 2024
Department of Ophthalmology, 12 de Octubre Hospital, Complutense University, Madrid, ESP.
Primary orbital melanoma and metastatic cutaneous melanoma of the orbit are extremely rare. Desmoplastic melanoma (DM) is an infrequent variant of melanoma that can extend from a superficial location into deep tissues by neurotropic mechanisms. A 78-year-old male was referred to us with a periocular mixed malignant melanoma (spindle cell melanoma with desmoplastic reaction) in his left lower eyelid with uncontrollable disease (orbital and inferior orbital rim invasion) despite treatment.
View Article and Find Full Text PDFRandomized Trial of Postoperative Radiation Therapy After Wide Excision of Neurotropic Melanoma of the Head and Neck (RTN2 Trial 01.09).
Ann Surg Oncol
September 2024
Department of Radiation Oncology, Princess Alexandra Hospital, Brisbane, Australia.
Background: Cutaneous neurotropic melanoma (NM) of the head and neck (H&N) is prone to local relapse, possibly due to difficulties widely excising the tumor. This trial assessed radiation therapy (RT) to the primary site after local excision.
Methods: Participants from 15 international centers were randomized to observation or RT.
Desmoplastic Melanoma of the Chest Wall: a Diagnostic Dilemma.
Indian J Surg Oncol
March 2024
Department of Pathology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.
Desmoplastic melanoma is an extremely rare subtype of malignant melanoma comprising only 1% of all the cutaneous melanomas. Being amelanotic and owing to its histopathological features of spindle cells lying in a collagenized stroma, it is often misdiagnosed as a dermatofibroma or scar tissue. The present case study describes a case of desmoplastic melanoma of the chest wall where the final diagnosis could be arrived at only after an extensive immunohistochemical panel to exclude other spindle cell proliferations.
View Article and Find Full Text PDFLocal Recurrence Rates After Excision of Desmoplastic Melanoma: A Systematic Review and Meta-Analysis.
Dermatol Surg
April 2023
Department of Dermatology, University of Pennsylvania, Philadelphia, Pennsylvania.
Background: Few prospective studies have evaluated local recurrence rates (LRR) after excision of desmoplastic melanoma (DM); however, several retrospective studies have reported high LRR.
Objective: To determine LRR after excision of DM and evaluate factors affecting LRR.
Materials And Methods: Systematic review of the PubMed, Embase, and Web of Science databases was performed to identify studies reporting local recurrence after excision of DM with conventional wide local excision (WLE), Mohs micrographic surgery (MMS), or staged excision (SE).
Interobserver agreement in the histopathological classification of desmoplastic melanomas.
Pathology
March 2023
Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer, New York, NY, USA.
Desmoplastic melanoma is a subtype of melanoma characterised by amelanotic fusiform melanocytes dispersed in a collagenous stroma. Cell-poor and fibrous stroma-rich 'pure' variants have been distinguished from 'mixed' variants with areas of higher cell density and/or less desmoplastic stroma. This distinction is relevant because patients whose tumours display a pure phenotype have a lower risk for regional lymph node metastasis and distant recurrence.
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