Basic Study
Copyright ©The Author(s) 2018.
World J Gastroenterol. Feb 14, 2018; 24(6): 671-679
Published online Feb 14, 2018. doi: 10.3748/wjg.v24.i6.671
Table 1 Summary of studies investigating psychological symptoms in patients with neuroendocrine tumours
Ref.Primary disease siteCorrelation with treatmentTreatmentNumber of patients with carcinoid syndrome/total patientsMethod of investigationKey results
Major et al[17] 1972Metastatic carcinoidNoNot reported22/22Not reported50% displaying depressive symptoms
Larsson et al[11] 2001Midgut carcinoidYes – prior to and following 12 mo of treatment with somatostatin analoguesSomatostatin analogues20/24Questionnaire – EORTC- QLQC301Anxiety scores significantly lower at 12 mo than baseline, depression scores significantly higher at 9 mo
Russo et al[29] 2003Metastatic mid-gut carcinoidNo. Experimental tryptophan depletion12 patients somatostatin analogues, 2 patients no treatment14/14Cambridge Neuropsychological tests automated battery (CANTAB): intra-/extra- dimensional shift task, matching to sample visual search, rapid visual information processing and spatial working memory.Impaired sustained attention. Not mimicking patients with depression
Larsson et al[27] 2003Carcinoid tumourYesSomatostatin analogues or interferon19/19Semi-structured interviewFatigue, diarrhoea, worry about diagnosis and limited physical ability most commonly reported symptoms
Russo et al[19] 2004Mid-gut carcinoid tumour with carcinoid syndromeNo14 patients on somatostatin analogues, 2 patients on interferon 2 patients no active treatment. 2 patients on somatostatin analogues + interferon20/20Semi-structured psychiatric interviewImpulse dysregulation leading to diagnosis of personality change secondary to a medical disorder in 15 patients (75%)
Table 2 Patient characteristics - advanced gastroenteropancreatic neuroendocrine tumours with and without carcinoid syndrome n (%)
All patientsn = 50With carcinoid syndromen = 25Without carcinoid syndrome n = 25P value
Age (median)65.567620.19
95%CI(61.5-68.5)(61.3-70.9)(58.0-68.9)
GenderF:21 (42) M:29 (58)F:9 (36) M:16 (64)F: 12 (48) M: 13 (52)0.39
Median time since diagnosis (mo)3945360.66
(95%CI)(21.54-48.46)(20.10-48.90)(18.21-56)
Prior Surgery24 (48)9 (36)15 (60)0.09
Recurrent disease following previous curative intent treatment8 (16)3 (12)5 (20)0.44
Primary disease site
Stomach1 (2)0 (0)1 (4)
Small bowel29 (58)18 (72)11 (44)
Pancreas11 (22)1 (4)10 (40)
Large bowel3 (6)1 (4)2 (8)
Unknown GI tract6 (12)5 (20)1 (4)
Median Ki-67
% (95%CI)3 (2-4.8)2 (2-5)3 (2-7.7)0.55
ECOG PS n (%)
014 (27)7 (28)7 (28)
130 (60)16 (64)14 (56)
24 (8)1 (4)3 (12)
32 (4)1 (4)1 (4)
Current treatment
Nil5 (10)2 (8)4 (16)
Best supportive care1 (2)0 (0)1 (4)
Chemotherapy5 (10)0 (0)5 (20)
Interferon + Somatostatin analogue2 (4)2 (8)0 (0)
Peptide receptor radionuclide Therapy2 (4)1 (4)1 (4)
Peptide receptor radionuclide therapy + Somatostatin analogues2 (4)1 (4)1 (4)
Somatostatin analogues28 (56)8 (72)9 (36)
Tryptophan hydroxylase inhibitor + Somatostatin analogues1 (2)1 (4)0 (0)
mTOR inhibitor4 (8)0 (0)4 (16)
Use of psychoactive medications
Nil44 (88)22 (88)22 (88)
Selective serotonin Reuptake inhibitors3 (6)1 (4)2 (8)
Benzodiazepine1 (2)1 (4)0 (0)
Selective serotonin reuptake inhibitors + benzodiazepine1 (2)0 (0)1 (4)
Unknown1 (2)1 (4)0 (0)
Table 3 Comparison of responses in patients with and without carcinoid syndrome in the HRQoL QLQ-C30 questionnaire
Without carcinoid syndrome
With Carcinoid syndrome
Difference between groupsP value
Mean score(95%CI)Mean score(95%CI)
Global health status6352.3-73.761.749.6-73.71.30.92
Physical functioning79.973.0-86.877.967.9-87.92.00.79
Role functioning7461.3-86.770.756.3-85.03.30.77
Emotional functioning7363.0 – 83.074.763.7-85.6-1.70.73
Cognitive functioning76.766.3-87.074.061.0-87.02.70.93
Social functioning7058.6- 81.479.367.2-91.5-9.30.15
Fatigue34.723.6-45.837.823.9-51.7-3.10.84
Nausea and vomiting11.34.0-18.78.001.4-14.63.30.31
Pain25.311.8-38.826.713.5-39.8-1.30.81
Dyspnoea12.51.7-23.324.010.5-37.5-11.50.15
Insomnia3622.9-39.122.710.9-34.313.30.12
Appetite loss18.78.1-29.222.79.7-35.7-40.81
Constipation9.31.9-16.89.301.9-16.801.00
Diarrhoea249.4-38.632.017.4-46.6-8.00.27
Financial difficulties13.33.6-23.18.00-18.25.30.30
Table 4 Comparison of responses in patients with and without carcinoid syndrome in the HRQoL QLQ-GI.NET21 questionnaire
Without carcinoid syndrome
With Carcinoid syndrome
Difference between groupsP value
Mean score(95%CI)Mean score(95%CI)
Endocrine symptoms16.78.4-24.928.418.1-38.8-11.80.04
Gastrointestinal symptoms18.912.7-25.324.016.5-31.5-5.10.37
Treatment-related symptoms17.58.6-26.410.14.1-16.27.40.20
Social functioning60.050.0-70.068.458.7-78.1-8.40.19
Disease-related worries56.943.0-70.838.726.2-51.218.20.05
Body image15.34.3-26.213.32.1-24.61.90.57
Weight gain18.77.4-30.013.32.1-24.65.30.30
Muscle/bone pain41.328.6-54.146.731.3-62.1-5.30.62
Information10.72.0-19.316.04.7-27.3-5.30.51
Sexual functioning60.835.6-85.968.447.4-89.5-7.60.82