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Case No. 308
2013-07-01~2013-07-31
출제자 : 이영흔
Hit : 345
| Period | 2013-07-01~2013-07-31 |
|---|---|
| Diagnosis | Malignant lymphoma, NK/T-cell type |
| Clinical information | C.C: periorbital swelling (onset: 4 weeks) |
| Discussion | Malignant lymphoma, NK/T-cell type Extranodal nasal type natural killer / T-cell lymphoma (NKTL) is a distinctive clinical entity that is now categorized as a subtype of peripheral T-cell lymphoma Predilection for Asian & South Americans, 9-12% of all non-Hodgkin lymphomas in Korea 74.1% of NKTL arising in the nasal cavity & paranasal sinus in Koreans Wide range of age, peak at 6th decade Imaging features of NKTL have been nonspecific for years, and differentiation between chronic inflammatory disease or other tumorous condition in the sinonasal cavity has been regarded as impossible Imaging findings: Diffuse tumor infiltration along the walls or mass lesion in nasal cavity Simultaneous involvement of naso/oropharynx Tumor extension into adjacent soft-tissue structures with little bone destruction on CECT Regional or systemic nodal enlargement rare Heterogeneous / variable contrast enhancement Low to intermediate SI on T2 (higher than that of muscle but lower than sinonasal mucosa)/Homogeneous T1 SI similar or slightly higher than muscle |
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Correct Answer
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