Intussusception is the invagination of a bowel segment into another immediately adjacent, causing obstruction, and the etiology can be benign, malignant, or idiopathic. The diagnosis may be obtained by ultrasound scans, or computed tomography imaging that can detect characteristics findings. Small bowel obstruction due to intussusception of inverted Meckel's diverticulum is a rare condition that usually constitutes a challenging diagnosis in adulthood. The surgical management in adults is often performed by en bloc resection without reduction attempts. We report a case of CASE REPORTS a middle-aged man with acute intestinal obstruction due to an ileo-ileal intussusception of inverted Meckel's diverticulum with a lipoma that was managed by laparoscopy. Worthy of note is the very scarce number of case reports on this exceeding uncommon association.
Lymphadenopathy related to vaccination has been reported as an adverse effect of mRNA-based COVID-19 vaccines. Most cases are regional lymph nodes near of injection site, with mild-moderate 18 F-fluorodeoxyglucose uptake on positron emission tomography. We report a middle-aged Brazilian man with mesenteric lymphadenitis manifested five days after the third dose of the Pfizer-BioNTech mRNA-based vaccine against COVID-19. The patient had no known risk factors and evolved with rapid clinical improvement. The imaging findings, laboratory determinations, histopathological and microbiological evaluations raised doubts about the hypothesis of an eventual adverse effect of the vaccine. The aim is to call attention to possible rare reactions of SARS-CoV-2 vaccinations.
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