Journal List > J Rhinol > v.23(2) > 1044354

Kim, Kim, Lee, and Kim: Sinonasal Undifferentiated Pleomorphic Sarcoma in Five Patient Cases

Abstract

Undifferentiated pleomorphic sarcoma (UPS) is a rare soft tissue sarcoma of the sinonasal area. Here, we present two primary cases of UPS and three post-irradiation sinonasal UPS cases. Imaging findings were misinterpreted by radiologists as representing other malignant tumors or recurrence of the primary tumor. Our cases indicate that post-irradiation UPS can originate within any part of the radiation field. Treatment outcomes of primary sinonasal UPS seem to be favorable if the tumor is treated ag-gressively, but the outcomes of post-irradiation sinonasal UPS may be poor if appropriate surgical margins cannot be obtained.

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Fig. 1.
A bulky soft tissue mass in the right maxillary sinus with destruction of the maxillary walls and extension to the buccal space in gadolinium-enhanced T1-weighted MR image of primary UPS.
jr-23-115f1.tif
Fig. 2.
Heterogeneously enhancing large mass with bony destruction of the maxillary walls and nasal cavity in CT scan (A) and MR image (B) of post-irradiated UPS.
jr-23-115f2.tif
Fig. 3.
Histopathology of radiation-induced undifferentiated pleomorphic sarcoma. The tumor consists of mixed spindle cells and roundedcells arranged in a stori-form pattern. A: Hematoxylin-eo-sin (×400). B: Negative staining for cytokeratin by immunohistochemistry (×400).
jr-23-115f3.tif
Table 1.
Clinical features of the current series of undifferentiated pleomorphic sarcoma of the sinonasal tract
No. Sex/age (years) Primary/ PIUPS Primary tumor Location T stage Treatment Outcome
1 M/41 Primary   ES and MS T2 S+ RT NED
2 F/58 Primary   MS T2 S+ RT DOD
3 M/30 PIUPS Olfactory neuroblastoma ES T1 S NED
4 F/47 PIUPS Undifferentiated carcinoma of the nasopharynx Nasopharynx T2 S+ CT DOD
5 F/49 PIUPS SCC of MS MS and NC T2 RT AWD

PIUPS: post-irradiated undifferentiated pleomorphic sarcoma, F: female, M: male, SCC: squamous cell carcinoma, MS: maxillary sinus, NC: nasal cavity, S: surgery, RT: radiation therapy, CT: chemotherapy, AWD: alive with disease, NED: no evidence of disease, DOD: dead of disease

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