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2017 ; 12
(4
): e0175125
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English Wikipedia
Unintentional weight loss: Clinical characteristics and outcomes in a prospective
cohort of 2677 patients
#MMPMID28388637
Bosch X
; Monclús E
; Escoda O
; Guerra-García M
; Moreno P
; Guasch N
; López-Soto A
PLoS One
2017[]; 12
(4
): e0175125
PMID28388637
show ga
BACKGROUND: Whereas there are numerous studies on unintentional weight loss
(UWL), these have been limited by small sample sizes, short or variable
follow-up, and focus on older patients. Although some case series have revealed
that malignancies escaping early detection and uncovered subsequently are
exceptional, reported follow-ups have been too short or unspecified and
necropsies seldom made. Our objective was to examine the etiologies,
characteristics, and long-term outcome of UWL in a large cohort of outpatients.
METHODS: We prospectively enrolled patients referred to an outpatient diagnosis
unit for evaluation of UWL as a dominant or isolated feature of disease. Eligible
patients underwent a standard baseline evaluation with laboratory tests and chest
X-ray. Patients without identifiable causes 6 months after presentation underwent
a systematic follow-up lasting for 60 further months. Subjects aged ?65 years
without initially recognizable causes underwent an oral cavity examination, a
videofluoroscopy or swallowing study, and a depression and cognitive assessment.
RESULTS: Overall, 2677 patients (mean age, 64.4 [14.7] years; 51% males) were
included. Predominant etiologies were digestive organic disorders (nonmalignant
in 17% and malignant in 16%). Psychosocial disorders explained 16% of cases. Oral
disorders were second to nonhematologic malignancies as cause of UWL in patients
aged ?65 years. Although 375 (14%) patients were initially diagnosed with
unexplained UWL, malignancies were detected in only 19 (5%) within the first 28
months after referral. Diagnosis was established at autopsy in 14 cases.
CONCLUSION: This investigation provides new information on the relevance of
follow-up in the long-term clinical outcome of patients with unexplained UWL and
on the role of age on this entity. Although unexplained UWL seldom constitutes a
short-term medical alert, malignancies may be undetectable until death.
Therefore, these patients should be followed up regularly (eg yearly visits) for
longer than reported periods, and autopsies pursued when facing unsolved deaths.