Impact of 3T multiparametric MRI and FDG-PET-CT in the evaluation of occult primary cancer with cervical node metastasis

Table 3 ADC values, stage and histology of the histologically proven occult PTs

Sites	ADC 10⁻³ mm²/s	Stage	Histology
1. Nasopharynx	0.760	cT2 cN3b	Poorly differentiated SCC
2. Nasopharynx	0.798	cT1 cN2	Nasopharyngeal carcinoma-EBV associated
3. Nasopharynx	0.772	cT2 cN3b	Poorly differentiated SCC
4. Mesopharynx	1.150	cT1 cN2b	Poorly differentiated SCC
5. Mesopharynx	artefacts	cT1 pN2b	Poorly differentiated SCC
6. Base of tongue	0.773	cT1 pN2a	Well differentiated SCC
7. Base of tongue	1.20	cT2 pN2b	Moderately differentiated SCC
8. Base of tongue	0.816	cT2 pN2a	Poorly differentiated SCC - HPV associated
9. Palatine tonsil	0.821	pT1 pN2b	Poorly differentiated SCC
10. Palatine tonsil	0.702	cT3 cN2b	Moderately differentiated carcinoma planocellulare
11. Hypopharynx	1.170	cT1 pN3	Poorly differentiated SCC
12. Hypopharynx	0.790	cT1 cN3	Poorly differentiated SCC
13. Supraglottic larynx	0.882	cT1 cN3	Poorly differentiated SCC
14. Parotis	0.908	cT1 cN3	Moderately differentiated carcinoma planocellulare
15. Neck soft tissue^b	0.943	pT2 pN0	Hemangiosarcoma
16. Base of tongue^a	2.1	T0NX	NO sign of malignancy

SCC squamous cell carcinoma
^aFine needle aspiration cytology of a neck nodal mass was false positive for cancer
^bNeck mass was considered by cytology and by both imaging methods metastatic nodal conglomerate

ISSN: 1470-7330