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Ann Diagn Pathol ; 52: 151732, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33798927

RESUMO

Median Arcuate Ligament Syndrome (MALS) is a rare entity characterized by severe post-prandial epigastric pain, nausea, vomiting, and/or weight loss. Symptoms have been attributed to vascular compression (celiac artery compression syndrome, CACS), but it remains controversial whether they could be secondary to neural compression. Literature review identified rare description of pathologic findings in surgery journals. The clinico-pathologic findings of four MALS patients who underwent robotic or laparoscopic surgery in our hospital are described. All our patients were female with a median age of 32.5 (range 25-55 years), and a median BMI of 23.5 kg/m2. They presented with chronic often post-prandial abdominal pain (4/4), nausea (3/4), emesis (2/4), anorexia (1/4), and weight loss (1/4). Two patients had a history of Crohn's disease. At intraoperative exploration, the celiac artery and adjacent nerves and ganglia were encased and partially compressed by fibrotic tissue in each patient. In each case laparoscopic excision of fibrotic tissue, celiac plexus and ligament division and was performed; celiac plexus nerve block was also performed in one patient. After surgical intervention, symptoms improved in three of the patients whose specimens show periganglionic and perineural fibrosis with proliferation of small nerve fibers. Our findings support neurogenic compression as a contributing factor in the development of pain and other MALS symptoms, and favor the use of MALS rather than CACS as diagnostic terminology. To further study the pathogenesis of this unusual syndrome, surgeons should submit all tissues excised during MALS procedures for histopathologic examination.


Assuntos
Artéria Celíaca/patologia , Plexo Celíaco/patologia , Fibrose/patologia , Gânglios Simpáticos/patologia , Síndrome do Ligamento Arqueado Mediano/patologia , Dor Abdominal/etiologia , Adulto , Índice de Massa Corporal , Artéria Celíaca/cirurgia , Plexo Celíaco/cirurgia , Constrição Patológica/etiologia , Feminino , Fibrose/cirurgia , Gânglios Simpáticos/cirurgia , Humanos , Laparoscopia/métodos , Síndrome do Ligamento Arqueado Mediano/diagnóstico , Síndrome do Ligamento Arqueado Mediano/cirurgia , Pessoa de Meia-Idade , Náusea/etiologia , Bloqueio Nervoso/métodos , Avaliação de Resultados em Cuidados de Saúde , Período Pós-Prandial , Procedimentos Cirúrgicos Robóticos/métodos , Vômito/etiologia , Redução de Peso
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