# Unusual upper back presentation of primary cutaneous diffuse large B-cell lymphoma, leg-type with complete regression

**Authors:** Ekaterina Korytnikova, Albert Zhou, Donna Aiudi, Michael Murphy, Philip Kerr

PMC · DOI: 10.1016/j.jdcr.2026.01.019 · JAAD Case Reports · 2026-01-23

## Full-text entities

- **Genes:** IRF4 (interferon regulatory factor 4) [NCBI Gene 3662] {aka IMD131, LSIRF, MUM1, NF-EM5, SHEP8}, SDC1 (syndecan 1) [NCBI Gene 6382] {aka CD138, SDC, SYND1, syndecan}, CD34 (CD34 molecule) [NCBI Gene 947], FOXP1 (forkhead box P1) [NCBI Gene 27086] {aka 12CC4, HSPC215, MFH, QRF1, hFKH1B}, CD5 (CD5 molecule) [NCBI Gene 921] {aka LEU1, T1}, FCER2 (Fc epsilon receptor II) [NCBI Gene 2208] {aka BLAST-2, CD23, CD23A, CLEC4J, FCE2, FCErII}, PWWP3A (PWWP domain containing 3A, DNA repair factor) [NCBI Gene 84939] {aka EXPAND1, HSPC211, MUM-1, MUM1}, CD79A (CD79a molecule) [NCBI Gene 973] {aka IGA, IGAlpha, MB-1, MB1}, TIA1 (TIA1 cytotoxic granule associated RNA binding protein) [NCBI Gene 7072] {aka ALS26, TIA-1, WDM}, CD8A (CD8 subunit alpha) [NCBI Gene 925] {aka CD8, CD8alpha, IMD116, Leu2, p32}, BCL2 (BCL2 apoptosis regulator) [NCBI Gene 596] {aka Bcl-2, PPP1R50}, PTPRC (protein tyrosine phosphatase receptor type C) [NCBI Gene 5788] {aka B220, CD45, CD45R, GP180, IMD105, L-CA}, KRT20 (keratin 20) [NCBI Gene 54474] {aka CD20, CK-20, CK20, K20, KRT21}, BCL6 (BCL6 transcription repressor) [NCBI Gene 604] {aka BCL5, BCL6A, LAZ3, ZBTB27, ZNF51}, MME (membrane metalloendopeptidase) [NCBI Gene 4311] {aka CALLA, CD10, CMT2T, NEP, SCA43, SFE}, TNFRSF8 (TNF receptor superfamily member 8) [NCBI Gene 943] {aka CD30, D1S166E, Ki-1}, SOX10 (SRY-box transcription factor 10) [NCBI Gene 6663] {aka DOM, PCWH, SOX-10, WS2E, WS4, WS4C}, MYC (MYC proto-oncogene, bHLH transcription factor) [NCBI Gene 4609] {aka MRTL, MYCC, bHLHe39, c-Myc}
- **Diseases:** systemic disease (MESH:D034721), leg lesions (MESH:D010264), fevers (MESH:D005334), PCDLBCL-LT (MESH:D016403), HIV (MESH:D015658), splenomegaly (MESH:D013163), cutaneous lesions (MESH:D009059), extranodal B-cell non-Hodgkin lymphoma (MESH:D016393), lymphadenopathy (MESH:D008206), pruritic lesion (MESH:C535817), rubeola (MESH:D008457), weight loss (MESH:D015431), toxicity (MESH:D064420), Cancer (MESH:D009369), skin lesions (MESH:D012871), hyperpigmentation (MESH:D017495), viral infections (MESH:D014777), EBV (MESH:D020031), trauma (MESH:D014947)
- **Chemicals:** fluorodeoxyglucose (MESH:D019788), rituximab (MESH:D000069283), uric acid (MESH:D014527), R-CHOP (-)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

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## References

10 references — full list in the complete paper: https://tomesphere.com/paper/PMC12963895/full.md

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Source: https://tomesphere.com/paper/PMC12963895