Table 2.
Spearman correlations between parotid histological parameters, parotid salivary flow and parotid gland ultrasonography
| Characteristics | Parotid gland histopathology |
Parotid salivary flow (biopsy side) |
||||
|---|---|---|---|---|---|---|
| FS | CD45 (%) | Fat (%) | Fibrosis (%) | UPF (ml/min) | SPF (ml/min) | |
| Parotid salivary flow (biopsy side) | ||||||
| UPF (ml/min) | 0.095 | −0.226 | 0.228 | −0.045 | – | – |
| SPF (ml/min) | −0.123 | −0.259 | 0.239 | −0.133 | – | – |
| Parotid gland ultrasonography (biopsy side) | ||||||
| PGUS total score (biopsy side) (0–13) | 0.510* | 0.560* | −0.110 | 0.077 | 0.069 | −0.196 |
| PGUS subscores of individual US components | ||||||
| Parenchymal echogenicity (range 0–1) | 0.219 | 0.346* | −0.186 | 0.177 | 0.134 | 0.015 |
| Homogeneity (range 0–3) | 0.574* | 0.633* | 0.197 | 0.156 | −0.002 | −0.224 |
| Hypoechogenic areas (range 0–3) | 0.523* | 0.540* | −0.114 | 0.034 | 0.042 | −0.227 |
| Hyperechogenic reflections (range 0–3) | 0.274 | 0.170 | 0.173 | 0.061 | 0.226 | 0.157 |
| Salivary gland posterior border (range 0–3) | 0.091 | 0.231 | 0.028 | −0.069 | −0.027 | −0.159 |
*
P < 0.05.