Mycosis fungoides pathophysiology

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Sogand Goudarzi, MD [2]


Mycosis fungoides arises from T-cell lymphocytes, which are normally involved in the cell mediated immune response. On microscopic histopathological analysis, atypical lymphoid cells, polymorphous inflammatory infiltrate in the dermis, and lymphocytes with cerebroid nuclei are characteristic findings of mycosis fungoides.


Microscopic Pathology

  • Mycosis fungoides pathological course may be divided into three main stages:[6][7][8]
  • Premycotic stage
  • Mycotic stage
  • Tumoros stage
  • The premycotic stage
  • Non-diagnostic and represented by chronic nonspecific dermatisis associated with psoriasiform changes in epidermis
  • The mycotic stage
  • Tumoros stage


  • The development of cutaneous T cell lymphoma is the result of multiple genetic mutations such as (There is not a classic chromosomal translocation in cutaeous T cell lymphoma( MF and SS ) significant):[17][18][19][20]
  • chromosomal instability has been noted. Losses on 1p, 10q, 13q, and 17p and gains of 4, 17q, and 18 have been identified [21]


  1. Wilcox RA (January 2016). "Cutaneous T-cell lymphoma: 2016 update on diagnosis, risk-stratification, and management". Am. J. Hematol. 91 (1): 151–65. doi:10.1002/ajh.24233. PMC 4715621. PMID 26607183.
  2. Fuhlbrigge RC, Kieffer JD, Armerding D, Kupper TS (October 1997). "Cutaneous lymphocyte antigen is a specialized form of PSGL-1 expressed on skin-homing T cells". Nature. 389 (6654): 978–81. doi:10.1038/40166. PMID 9353122.
  3. 3.0 3.1 3.2 Foss, Francine M.; Girardi, Michael (2017). "Mycosis Fungoides and Sezary Syndrome". Hematology/Oncology Clinics of North America. 31 (2): 297–315. doi:10.1016/j.hoc.2016.11.008. ISSN 0889-8588.
  4. Bagherani, Nooshin; Smoller, Bruce R. (2016). "An overview of cutaneous T cell lymphomas". F1000Research. 5: 1882. doi:10.12688/f1000research.8829.1. ISSN 2046-1402.
  5. Mahalingam, Meera; Reddy, Vijaya B. (2015). "Mycosis Fungoides, Then and Now… Have We Travelled?". Advances In Anatomic Pathology. 22 (6): 376–383. doi:10.1097/PAP.0000000000000092. ISSN 1072-4109.
  6. Song, Sophie X.; Willemze, Rein; Swerdlow, Steven H.; Kinney, Marsha C.; Said, Jonathan W. (2013). "Mycosis Fungoides". American Journal of Clinical Pathology. 139 (4): 466–490. doi:10.1309/AJCPOBDP2OQAJ5BR. ISSN 1943-7722.
  7. Vora, Rita; Anjaneyan, Gopikrishnan; Mubashir, Syed; Talavia, Parag (2012). "Mycosis Fungoides: Tumour d′emblee". Indian Dermatology Online Journal. 3 (2): 122. doi:10.4103/2229-5178.96709. ISSN 2229-5178.
  8. Tirumalae, Rajalakshmi (2013). "Psoriasiform dermatoses: Microscopic approach". Indian Journal of Dermatology. 58 (4): 290. doi:10.4103/0019-5154.113945. ISSN 0019-5154.
  9. Shin, J.; Monti, S.; Aires, D. J.; Duvic, M.; Golub, T.; Jones, D. A.; Kupper, T. S. (2007). "Lesional gene expression profiling in cutaneous T-cell lymphoma reveals natural clusters associated with disease outcome". Blood. 110 (8): 3015–3027. doi:10.1182/blood-2006-12-061507. ISSN 0006-4971.
  10. Wong, Henry K.; Mishra, Anjali; Hake, Timothy; Porcu, Pierluigi (2011). "Evolving Insights in the Pathogenesis and Therapy of Cutaneous T-cell lymphoma (Mycosis Fungoides and Sezary Syndrome)". British Journal of Haematology. 155 (2): 150–166. doi:10.1111/j.1365-2141.2011.08852.x. ISSN 0007-1048.
  11. Wilcox, Ryan A. (2011). "Cutaneous T-cell lymphoma: 2011 update on diagnosis, risk-stratification, and management". American Journal of Hematology. 86 (11): 928–948. doi:10.1002/ajh.22139. ISSN 0361-8609.
  12. Whittaker, Sean (2006). "Biological Insights into the Pathogenesis of Cutaneous T-Cell Lymphomas (CTCL)". Seminars in Oncology. 33: 3–6. doi:10.1053/j.seminoncol.2005.12.015. ISSN 0093-7754.
  13. Henry K. Wong (2013). "Novel biomarkers, dysregulated epigenetics, and therapy in cutaneous T-cell lymphoma". Discovery medicine. 16 (87): 71–78. PMID 23998443. Unknown parameter |month= ignored (help)
  14. Karenko, Leena; Hahtola, Sonja; Päivinen, Suvi; Karhu, Ritva; Syrjä, Sanna; Kähkönen, Marketta; Nedoszytko, Boguslaw; Kytölä, Soili; Zhou, Ying; Blazevic, Vesna; Pesonen, Maria; Nevala, Hanna; Nupponen, Nina; Sihto, Harri; Krebs, Inge; Poustka, Annemarie; Roszkiewicz, Jadwiga; Saksela, Kalle; Peterson, Pärt; Visakorpi, Tapio; Ranki, Annamari (2005). "Primary Cutaneous T-Cell Lymphomas Show a Deletion or Translocation AffectingNAV3, the HumanUNC-53Homologue". Cancer Research. 65 (18): 8101–8110. doi:10.1158/0008-5472.CAN-04-0366. ISSN 0008-5472.
  15. Lin, Yea-Lih; Pasero, Philippe (2012). "Interference Between DNA Replication and Transcription as a Cause of Genomic Instability". Current Genomics. 13 (1): 65–73. doi:10.2174/138920212799034767. ISSN 1389-2029.
  16. Choi, Jaehyuk; Goh, Gerald; Walradt, Trent; Hong, Bok S; Bunick, Christopher G; Chen, Kan; Bjornson, Robert D; Maman, Yaakov; Wang, Tiffany; Tordoff, Jesse; Carlson, Kacie; Overton, John D; Liu, Kristina J; Lewis, Julia M; Devine, Lesley; Barbarotta, Lisa; Foss, Francine M; Subtil, Antonio; Vonderheid, Eric C; Edelson, Richard L; Schatz, David G; Boggon, Titus J; Girardi, Michael; Lifton, Richard P (2015). "Genomic landscape of cutaneous T cell lymphoma". Nature Genetics. 47 (9): 1011–1019. doi:10.1038/ng.3356. ISSN 1061-4036.
  17. Leena Karenko, Sonja Hahtola, Suvi Paivinen, Ritva Karhu, Sanna Syrja, Marketta Kahkonen, Boguslaw Nedoszytko, Soili Kytola, Ying Zhou, Vesna Blazevic, Maria Pesonen, Hanna Nevala, Nina Nupponen, Harri Sihto, Inge Krebs, Annemarie Poustka, Jadwiga Roszkiewicz, Kalle Saksela, Part Peterson, Tapio Visakorpi & Annamari Ranki (2005). "Primary cutaneous T-cell lymphomas show a deletion or translocation affecting NAV3, the human UNC-53 homologue". Cancer research. 65 (18): 8101–8110. doi:10.1158/0008-5472.CAN-04-0366. PMID 16166283. Unknown parameter |month= ignored (help)
  18. Yaohua Zhang, Yang Wang, Richard Yu, Yuanshen Huang, Mingwan Su, Cheng Xiao, Magdalena Martinka, Jan P. Dutz, Xuejun Zhang, Zhizhong Zheng & Youwen Zhou (2012). "Molecular markers of early-stage mycosis fungoides". The Journal of investigative dermatology. 132 (6): 1698–1706. doi:10.1038/jid.2012.13. PMID 22377759. Unknown parameter |month= ignored (help)
  19. Alexander Ungewickell, Aparna Bhaduri, Eon Rios, Jason Reuter, Carolyn S. Lee, Angela Mah, Ashley Zehnder, Robert Ohgami, Shashikant Kulkarni, Randall Armstrong, Wen-Kai Weng, Dita Gratzinger, Mahkam Tavallaee, Alain Rook, Michael Snyder, Youn Kim & Paul A. Khavari (2015). "Genomic analysis of mycosis fungoides and Sezary syndrome identifies recurrent alterations in TNFR2". Nature genetics. 47 (9): 1056–1060. doi:10.1038/ng.3370. PMID 26258847. Unknown parameter |month= ignored (help)
  20. Jaehyuk Choi, Gerald Goh, Trent Walradt, Bok S. Hong, Christopher G. Bunick, Kan Chen, Robert D. Bjornson, Yaakov Maman, Tiffany Wang, Jesse Tordoff, Kacie Carlson, John D. Overton, Kristina J. Liu, Julia M. Lewis, Lesley Devine, Lisa Barbarotta, Francine M. Foss, Antonio Subtil, Eric C. Vonderheid, Richard L. Edelson, David G. Schatz, Titus J. Boggon, Michael Girardi & Richard P. Lifton (2015). "Genomic landscape of cutaneous T cell lymphoma". Nature genetics. 47 (9): 1011–1019. doi:10.1038/ng.3356. PMID 26192916. Unknown parameter |month= ignored (help)
  21. 21.0 21.1 Mao, Xin; Orchard, Guy; Lillington, Debra M.; Russell-Jones, Robin; Young, Bryan D.; Whittaker, Sean (2003). "Genetic alterations in primary cutaneous CD30+ anaplastic large cell lymphoma". Genes, Chromosomes and Cancer. 37 (2): 176–185. doi:10.1002/gcc.10184. ISSN 1045-2257.

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