Journal List > J Korean Orthop Assoc > v.48(6) > 1013272

Kim, Song, and Kim: Non-Hodgkin Lymphoma Occurred in Psoas Muscle


One fourth of cases of non-Hodgkin lymphoma were reported as extranodal type and skeletal muscle involvement rarely seen as a primary event and local dissemination. The psoas involved lesion with spine mimicking pain is caused mainly by infection rather than non-infected conditions such as tumor. We report on a rare case of non-Hodgkin lymphoma occurring in psoas muscle, which required differentiation from a psoas abscess.

Figures and Tables

Figure 1
Preoperative magnetic resonance imaging findings. (A) Herniated nucleus pulposus of T12-L1 in sagittal view. (B) Axial view of T12-L1: Right dominant central protruding disc.
Figure 2
Preoperative magnetic resonance imaging findings. (A) Irregular heterogenous mass in right psoas muscle region in axial view. (B) Peripheral enhancing mass that invades right psoas muscle.
Figure 3
Preoperative positron emission tomography findings. (A) Peripheral fluorodeoxyglucose (FDG) uptake along the right psoas muscle in coronal view. (B) Central necrosis and peripheral strong FDG uptake in right psoas muscle in axial view.
Figure 4
Intraoperative picture and removed necrotic mass. (A) Irregular mass with necrotic tissue in right psoar muscle. (B) Removed necrotic mass.
Figure 5
Pathologic findings. (A) Diffuse infiltration of malignant cells, some showing Reed-Sternberg like features (H&E, ×400). (B) Immunohistochemical stain for CD30 was positive in the larger neoplastic cells (×400).


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