Concurrent Hairy Cell Leukemia and Metastatic Merkel Cell Carcinoma

Hairy cell leukemia (HCL) and Merkel cell carcinoma (MCC) are two rare malignancies with distinct cells of origin. HCL is a lymphoid malignancy of mature B cells, and MCC derives from neuroendocrine cell origin. HCL has a favorable prognosis with most patients achieving long-term remission and poten...

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Main Authors: Ajay Prakash, Alhossain A. Khalafallah
Format: Article
Language:English
Published: Wiley 2018-01-01
Series:Case Reports in Oncological Medicine
Online Access:http://dx.doi.org/10.1155/2018/1736854
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author Ajay Prakash
Alhossain A. Khalafallah
author_facet Ajay Prakash
Alhossain A. Khalafallah
author_sort Ajay Prakash
collection DOAJ
description Hairy cell leukemia (HCL) and Merkel cell carcinoma (MCC) are two rare malignancies with distinct cells of origin. HCL is a lymphoid malignancy of mature B cells, and MCC derives from neuroendocrine cell origin. HCL has a favorable prognosis with most patients achieving long-term remission and potential cure. In contrast, MCC is an aggressive malignancy affecting the skin and can metastasize quickly with a dismal prognosis. Immunocompromised patients, such as those with AIDS, posttransplant, and the elderly, have higher incidences than the general population, suggesting a possible immune mechanism. We report a case where a patient presented with HCL and metastatic MCC synchronously. This is the first reported case of these two rare malignancies occurring concurrently at initial presentation and may represent a role of immunosuppression in the pathogenesis of MCC.
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spelling doaj-art-deae5482710f41c489d512cbe064641d2025-02-03T07:24:22ZengWileyCase Reports in Oncological Medicine2090-67062090-67142018-01-01201810.1155/2018/17368541736854Concurrent Hairy Cell Leukemia and Metastatic Merkel Cell CarcinomaAjay Prakash0Alhossain A. Khalafallah1Tasmanian Medical Laboratory, Launceston, Tasmania, AustraliaSpecialist Care Australia, Launceston, Tasmania, AustraliaHairy cell leukemia (HCL) and Merkel cell carcinoma (MCC) are two rare malignancies with distinct cells of origin. HCL is a lymphoid malignancy of mature B cells, and MCC derives from neuroendocrine cell origin. HCL has a favorable prognosis with most patients achieving long-term remission and potential cure. In contrast, MCC is an aggressive malignancy affecting the skin and can metastasize quickly with a dismal prognosis. Immunocompromised patients, such as those with AIDS, posttransplant, and the elderly, have higher incidences than the general population, suggesting a possible immune mechanism. We report a case where a patient presented with HCL and metastatic MCC synchronously. This is the first reported case of these two rare malignancies occurring concurrently at initial presentation and may represent a role of immunosuppression in the pathogenesis of MCC.http://dx.doi.org/10.1155/2018/1736854
spellingShingle Ajay Prakash
Alhossain A. Khalafallah
Concurrent Hairy Cell Leukemia and Metastatic Merkel Cell Carcinoma
Case Reports in Oncological Medicine
title Concurrent Hairy Cell Leukemia and Metastatic Merkel Cell Carcinoma
title_full Concurrent Hairy Cell Leukemia and Metastatic Merkel Cell Carcinoma
title_fullStr Concurrent Hairy Cell Leukemia and Metastatic Merkel Cell Carcinoma
title_full_unstemmed Concurrent Hairy Cell Leukemia and Metastatic Merkel Cell Carcinoma
title_short Concurrent Hairy Cell Leukemia and Metastatic Merkel Cell Carcinoma
title_sort concurrent hairy cell leukemia and metastatic merkel cell carcinoma
url http://dx.doi.org/10.1155/2018/1736854
work_keys_str_mv AT ajayprakash concurrenthairycellleukemiaandmetastaticmerkelcellcarcinoma
AT alhossainakhalafallah concurrenthairycellleukemiaandmetastaticmerkelcellcarcinoma