Hepatosplenic gammadelta T-cell lymphoma with ring chromosome 7, an isochromosome 7q equivalent clonal chromosomal aberration.

Abstract

Hepatosplenic T-cell lymphoma is a rare, clinically aggressive lymphoma. Most cases represent a neoplasm of mature non-activated gammadelta T cells. Isochromosome 7q i(7)(q10) is thought to be the primary cytogenetic abnormality of this disease. In this paper, we describe a hepatosplenic gammadelta T-cell lymphoma case, with clonal ring chromosome 7 exemplifying an isochromosome 7q equivalent clonal aberration. A 62-year-old female patient presented with thrombocytopenia, isolated hepatosplenomegaly, and extremely high levels of LDH. Bone marrow work-up demonstrated a sinusoidal cytotoxic T-cell infiltrate with blastic features, while molecular studies verified monoclonal rearrangement for both TCR gamma and TCR delta genes. Cytogenetics revealed clonal abnormalities including ring chromosome 7, trisomy 8, and der(19), while FISH analysis detected 7q amplification with partial deletion of 7p in ring chromosome 7. To the best of our knowledge, this is the first reported T-cell lymphoma case with ring chromosome 7.

• Authors: Julia Tamaska, Emma Adam, Andras Kozma, Laszlo Gopcsa, Hajnalka Andrikovics, Attila Tordai, Gabriella Halm, Laszlo Bereczki, Eniko Bagdi, Laszlo Krenacs
• Journal: Virchows Archiv : an international journal of pathology (Virchows Arch) Vol. 449 Issue 4 Pg. 479-83 (Oct 2006) ISSN: 0945-6317 [Print] Germany
• PMID: 16941150 (Publication Type: Case Reports, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• DNA, Neoplasm

Topics

• Antineoplastic Combined Chemotherapy Protocols (therapeutic use)
• Bone Marrow (chemistry, pathology)
• Chromosome Aberrations
• Chromosomes, Human, Pair 7
• Clone Cells
• DNA, Neoplasm (analysis)
• Fatal Outcome
• Female
• Gene Rearrangement, gamma-Chain T-Cell Antigen Receptor
• Humans
• Immunophenotyping
• In Situ Hybridization, Fluorescence
• Liver Neoplasms (chemistry, drug therapy, genetics, pathology)
• Lymphoma, T-Cell (chemistry, drug therapy, genetics, pathology)
• Middle Aged
• Polymerase Chain Reaction
• Spectral Karyotyping
• Splenic Neoplasms (chemistry, drug therapy, genetics, pathology)