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The Neuroanatomy of Somatoform Disorders: A Magnetic Resonance Imaging Study.

Abstract：

BACKGROUND:Somatoform disorders (SDs) are a heterogeneous group of psychiatric syndromes characterized by common symptoms, which may mimic a physical condition but they are not explained by a medical condition. Although the biologic nature of this disorder has been widely accepted, the neuroanatomical correlates characterizing SDs are still inconclusive. OBJECTIVE:This study aims to explore gray matter (GM) volume alterations in SD patients compared to healthy controls and their possible association with clinical and cognitive measures. METHOD:We used voxel-based morphometry to examine regional GM volumes in 20 inpatients with SDs and 24-matched healthy controls. Only for SD patients, we employed multiple instruments to assess psychopathology and cognitive functioning, which were then used to explore their association with GM volume deficits. RESULTS:Compared to healthy controls, SD patients showed GM volume reductions in the hypothalamus, left fusiform gyrus, right cuneus, left inferior frontal gyrus, left posterior cingulate, and right amygdala (p < 0.05, cluster Family Wise Error corrected). Additionally, in SD, Symptom Checklist-90-Phobia and Hamilton Depressive Rating Scale scores negatively correlated with specific fronto-temporoparietal regions whereas Symptom Checklist-90-Sleep scores positively correlated with anterior cingulate cortex. Lastly, the Boston Naming Test negatively correlated with fronto-temporoparietal and striatal volumes whereas Free and Cued Selective Reminding Test and Stroop scores positively correlated with superior temporal gyrus and cuneus, respectively (all p < 0.05, cluster Family Wise Error corrected). CONCLUSION:Our results suggest that SDs might be characterized by selective impairments in specific cortico-limbic regions associated to two overlapping circuits, the neuromatrix of pain and the emotion regulation system.

journal_name

Psychosomatics

journal_title

Psychosomatics

authors

Delvecchio G,Rossetti MG,Caletti E,Arighi A,Galimberti D,Basilico P,Mercurio M,Paoli R,Cinnante C,Triulzi F,Altamura AC,Scarpini E,Brambilla P

doi

10.1016/j.psym.2018.07.005

subject

Has Abstract

pub_date

2019-01-01 00:00:00

pages

278-288

issue

3

eissn

0033-3182

issn

1545-7206

pii

S0033-3182(18)30326-8

journal_volume

60

pub_type

杂志文章

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