Development of Merkel Cell Carcinoma in a Patient Receiving Rituximab

Merkel cell carcinoma (MCC) is a rare, rapidly growing, and aggressive dermatological neoplasm. It is commonly reported in Caucasian ethnicities, and almost 50% of the patients have a concomitant malignancy and are on immunosuppressive chemotherapy. Here, we present a 79-year-old woman with a histor...

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Main Authors: Bana Antonios, Ujjwal Karki, Kais Antonios, Bipin Ghimire, Mohammad Muhsin Chisti
Format: Article
Language:English
Published: Wiley 2022-01-01
Series:Case Reports in Oncological Medicine
Online Access:http://dx.doi.org/10.1155/2022/1814338
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author Bana Antonios
Ujjwal Karki
Kais Antonios
Bipin Ghimire
Mohammad Muhsin Chisti
author_facet Bana Antonios
Ujjwal Karki
Kais Antonios
Bipin Ghimire
Mohammad Muhsin Chisti
author_sort Bana Antonios
collection DOAJ
description Merkel cell carcinoma (MCC) is a rare, rapidly growing, and aggressive dermatological neoplasm. It is commonly reported in Caucasian ethnicities, and almost 50% of the patients have a concomitant malignancy and are on immunosuppressive chemotherapy. Here, we present a 79-year-old woman with a history of relapsed Stage II, grade III follicular lymphoma, receiving maintenance rituximab infusions. She presented with a raised erythematous papule on her left cheek. An excisional biopsy of the lesion confirmed a diagnosis of Merkel cell carcinoma. After which, she underwent a wider excision with 1-2 cm margins. PET scan did not reveal any FDG-avid uptake lesions that would be concerning for metastatic disease. However, she underwent a sentinel lymph node biopsy which was also negative. Thus, the diagnosis was finalized as Stage I (T1 N0 M0) MCC. There are only two reported cases in literature about the significant progression of Merkel cell carcinoma in patients who coincidentally were receiving rituximab as a part of treatment for another disease. This raises questions for future investigation and research on whether there is a direct association between rituximab use specifically and the rapid growth of MCC.
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spelling doaj-art-28980ca4ddf9409f93cee50f7aa93eea2025-08-20T03:54:47ZengWileyCase Reports in Oncological Medicine2090-67142022-01-01202210.1155/2022/1814338Development of Merkel Cell Carcinoma in a Patient Receiving RituximabBana Antonios0Ujjwal Karki1Kais Antonios2Bipin Ghimire3Mohammad Muhsin Chisti4Department of Internal MedicineDepartment of Internal MedicineDepartment of Internal MedicineDepartment of Internal MedicineDepartment of Hematology & OncologyMerkel cell carcinoma (MCC) is a rare, rapidly growing, and aggressive dermatological neoplasm. It is commonly reported in Caucasian ethnicities, and almost 50% of the patients have a concomitant malignancy and are on immunosuppressive chemotherapy. Here, we present a 79-year-old woman with a history of relapsed Stage II, grade III follicular lymphoma, receiving maintenance rituximab infusions. She presented with a raised erythematous papule on her left cheek. An excisional biopsy of the lesion confirmed a diagnosis of Merkel cell carcinoma. After which, she underwent a wider excision with 1-2 cm margins. PET scan did not reveal any FDG-avid uptake lesions that would be concerning for metastatic disease. However, she underwent a sentinel lymph node biopsy which was also negative. Thus, the diagnosis was finalized as Stage I (T1 N0 M0) MCC. There are only two reported cases in literature about the significant progression of Merkel cell carcinoma in patients who coincidentally were receiving rituximab as a part of treatment for another disease. This raises questions for future investigation and research on whether there is a direct association between rituximab use specifically and the rapid growth of MCC.http://dx.doi.org/10.1155/2022/1814338
spellingShingle Bana Antonios
Ujjwal Karki
Kais Antonios
Bipin Ghimire
Mohammad Muhsin Chisti
Development of Merkel Cell Carcinoma in a Patient Receiving Rituximab
Case Reports in Oncological Medicine
title Development of Merkel Cell Carcinoma in a Patient Receiving Rituximab
title_full Development of Merkel Cell Carcinoma in a Patient Receiving Rituximab
title_fullStr Development of Merkel Cell Carcinoma in a Patient Receiving Rituximab
title_full_unstemmed Development of Merkel Cell Carcinoma in a Patient Receiving Rituximab
title_short Development of Merkel Cell Carcinoma in a Patient Receiving Rituximab
title_sort development of merkel cell carcinoma in a patient receiving rituximab
url http://dx.doi.org/10.1155/2022/1814338
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