文档介绍:鼻腔鼻窦畸胎癌肉瘤的调强放射治疗
第1页,共29页,2022年,5月20日,18点50分,星期四
Introduction
Case
Discussion
第2页,共29页,2022年,5月20日,18点50分,星期eratocarcinosarcoma consists of two components, epithelial and mesenchymal (hematoxylin-eosin, original magnification ×200)
第8页,共29页,2022年,5月20日,18点50分,星期四
cT3N0M0
MRI
introduction
discussion
case
MRI revealed a soft tissue filling the left meatus, maxillary and ethmoid sinus, and effusion in the left maxillary sinus
第9页,共29页,2022年,5月20日,18点50分,星期四
introduction
discussion
case
Anterior craniofacial resection
IMRT
GTV included the residual gross disease in the nasal cavity and paranasal sinus
CTV-60 includes the GTV with a 5~10 mm margin, the whole nasal cavity and the involved paranasal sinus
CTV-54
high-risk local structures (including the whole nasopharynx, lower half of sphenoid sinus, et al)
lymphatic regions (including ipsilateral lymph node levels IB, II, III and VA)
A 3-mm margin was added to produce PTVs
PTV-66 was prescribed to 66 Gy with Gy/fraction
PTV-60 was prescribed to 60 Gy with Gy/fraction
PTV-54 was prescribed to 54 Gy with Gy/fraction
Treatment
第10页,共29页,2022年,5月20日,18点50分,星期四
Follow-up
introduction
discussion
case
Now years have passed since the irradiation therapy
No severe dry-eye syndrome, and other severe radiation-induced ocular toxicities happened
No evidence of recurrence or metastasis
第11页,共29页,2022年,5月20日,18点50分,星期四
Introduction
Case
Discussion
第12页,共29页,2022年,5月20日,18点50分,星期四
Shoulders ?
introduction
case
discussion
第13页,共29页,2022年,5月20日,18点50分,星期四
Sinonasal tumors
Frontal Sinus
Maxillary Sinus
Ethmoid Sinus
Spenoid Sinus
1
2
3
4
Challenge !
introduction
case
discussion
第14页,共29页,2022年,5月20日,18点50分,星期四
IMRT
introduction
case
discussion
3-beam conventional 2D
6-beam conventional 3D conformal
7-beam IMRT
A dosimetry comparison between (a) a 3-beam conventional 2D treatment, (b) a 6-beam conventional 3D conformal RT treatment, and (c) a 7-beam I