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Adult T-cell leukemia/lymphoma — Clinical Guidelines

Overview

Adult T-cell leukemia/lymphoma (ATLL) is a rare malignancy associated with human T-cell lymphotropic virus type I (HTLV-I) infection, characterized by clonal proliferation of mature T-cells with distinct clinical subtypes including smoldering, chronic, acute, and lymphoma 1 3 4.

Diagnosis

Presence of HTLV-I infection confirmed by serological testing 4.

Peripheral blood involvement with atypical lymphoid cells, though often low percentage 4 5.

Lymph node examination showing systemic involvement, though may be mild 4.

Skin lesions with increased Langerhans cell infiltration can be observed 7.

Endoscopic findings mimicking submucosal tumors in visceral involvement, particularly in the stomach 6.

Management

First-line treatments:

- Chemotherapy regimens such as zidovudine (AZT) for smoldering and chronic forms 1. - Allogeneic hematopoietic stem cell transplantation (HSCT) for eligible patients, showing promising outcomes 2.

Adjunctive treatments:

- Management of complications like erythroderma with supportive care; spontaneous regression noted in some cases 5. - Supportive care for organ failure and metastatic calcification, particularly in advanced stages 4.

Special Populations

Comorbidities: Management strategies may need adjustment in patients with multiple organ failure or extensive metastatic calcification, emphasizing supportive care 4.

No specific data provided for pregnancy, pediatrics, or elderly populations in the given abstracts.

Key Recommendations

Confirm HTLV-I infection through serological testing for diagnosis 4.

Consider allogeneic HSCT as a viable treatment option for eligible ATLL patients, supported by retrospective study findings 2 (Evidence: Moderate).

Monitor and manage complications such as erythroderma and organ failure aggressively, given their potential severity 5 4 (Evidence: Weak).

References

1 Ishikawa S. Opposite RHOA functions within the ATLL category. Blood 2016. link 2 Abboud C. Allogeneic HSCT for ATL: a good start. Blood 2012. link 3 Hivin P, Basbous J, Raymond F, Henaff D, Arpin-André C, Robert-Hebmann V et al.. The HBZ-SP1 isoform of human T-cell leukemia virus type I represses JunB activity by sequestration into nuclear bodies. Retrovirology 2007. link 4 Kumamoto H, Ichinohasama R, Sawai T, Naganuma H, Furukawa Y, Akiu N et al.. Multiple organ failure associated with extensive metastatic calcification in a patient with an intermediate state of human T lymphotropic virus type I (HTLV-I) infection: report of an autopsy case. Pathology international 1998. link 5 Hashizume H, Nakayama F, Oku T, Takigawa M. Adult T-cell leukemia with regression of erythroderma and simultaneous emergence of leukemia. Journal of the American Academy of Dermatology 1992. link70263-f) 6 Obata S, Tsukamoto A, Kimura K, Maeda K, Kawamura R. Adult T-cell leukemia presenting a IIa + IIc-like lesion in the stomach on endoscopic examination. Endoscopy 1990. link 7 Shamoto M. Langerhans cells increase in the dermal lesions of adult T cell leukaemia in Japan. Journal of clinical pathology 1983. link

Adult T-cell leukemia/lymphoma