Investig Magn Reson Imaging.  2018 Dec;22(4):240-244. 10.13104/imri.2018.22.4.240.

A Rare Manifestation of Solitary Primary Bone Lymphoma of the Finger: a Case Report

• Yeom JA
• Song YS
• Lee IS
• Choi KU
• Kim JI

• KMID: 2431108
• DOI: http://doi.org/10.13104/imri.2018.22.4.240

Abstract

Primary extranodal bone lymphoma involving the peripheral extremities is extremely rare. Here, we report a definitive case of diffuse large B-cell lymphoma involving the phalangeal bone of the 3rd finger. Systemic evaluation revealed the lesion as the only site of lymphoma involvement.

Keyword

Primary lymphoma; Bone; Finger

MeSH Terms

Extremities
Fingers*
Lymphoma*
Lymphoma, B-Cell

Figure

• 

  Fig. 1 A 71-year-old-man with DLBCL involving 3rd finger. (a) Plain radiograph shows osteolytic bony mass (arrows) with soft-tissue component (arrowheads) involving right third middle phalanx. (b) Axial T2-weighted image reveals a high-signal intensity mass (arrows) associated with the right third middle phalanx. The mass originated in the intramedullary cavity constituting the large soft-tissue component, abutting the flexor tendon of the third finger. (c) Coronal T1-weighted image indicates a mass of intermediate signal intensity (arrow). (d) Coronal T1-weighted image with fat suppression after gadolinium administration shows homogenous enhancement of the mass (arrow).

• 

  Fig. 2 Microscopic findings of the finger mass. (a) Microscopic finding (Hematoxylin & Eosin stain, × 200) shows diffuse infiltration of atypical cells. (b) Immunohistochemical staining was positive for leukocyte common antigen.

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  Fig. 3 Systemic evaluation of other organ involvement. (a) Bone scan reveals no evidence of other bone involvement. (b) PET-CT reveals no evidence of other organ involvement of lymphoma.

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