An unusual case of gastritis in an infant -...
Transcript of An unusual case of gastritis in an infant -...
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An unusual case of gastritis in an infant
Disna Abeysuriya
PathWest
Princess Margaret Hospital
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Acknowledgements
• Dr Kunal Thacker – Paediatric gastroenterologist
• Dr Gareth Jevon – Paediatric pathologist
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Hx
• Baby AF, 10 month old Australian aboriginal girl presented to ED with billious vomiting for 2 days.
• No other illness.
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Ex
• Lethargic and dehydrated requiring fluid resuscitation
• Blood stained nasogastric aspirates
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Ix
• Mildly low Hb 141 g/l
• X ray abdomen – grossly distended stomach with intramural gas and pneumatoperitoneum.
Suggestive of emphysematous gastritis
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Mx
• Laparotomy – confirmed pneumatosis of the stomach wall and lesser omentum.
• There was no peritoneal free air or contamination.
• Intraoperative gastroscopy – severe diffuse gastritis with sloughing of mucosa and ulceration.
• Duodenum was distended and could not be traversed beyond the level of ampulla of Vater.
• Duodenal web found at D4 and was resected.
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Histology
• Duodenal web
• Biopsies from Oesophagus, gastric antrum and duodenum
• DDx - micrococcus
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Sarcina organisms
• First documented in 1842 in the stomach contents of a patient with pain, bloating and vomiting
• Sarcina ventriculi
• Nearly spherical cells 1.8-3 micrometres
• Distinct packeted morphology - tetrad or octad (8-10 micrometres)
• Gram positive cocci
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• Non motile, acid tolerant bacteria - can live in low pH environment of stomach
• Organism on the luminal mucosal surface without direct invasion or reaction of the epithelium
• Obligate anaerobe
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• Sole energy source is fermentative metabolism of carbohydrate, produces CO2 as a by product
• Ubiquitous and found in soil and air
• Found in livestock and faeces of vegetarians
• Innocent bystander in healthy humans unless in the setting of gastro paresis or gastric outlet obstruction when it overgrows in stagnant food debris.
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• Only 9 cases of human infection are reported in literature
• Ages 12-73yrs
• All cases had retained food in the stomach due to anatomic or physiologic delay in emptying the stomach
• Bariatric surgery, small bowel resection, pancreaticoduodenectomy, gastric pull through for oesophageal atresia, tumour/mass, diabetic gastroparesis, obesity and metabolic syndrome
• Complications – frothy vomiting, abdominal pain and distension, iron deficiency anaemia, gastric ulcer, emphysematous gastritis and gastric perforation
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Management
• Commensal in patients with poor gastric emptying – No drug treatment. Identify the cause
• Prominent dysphagia or pain – PPI and prokinetic Rx
• Sarcina seen in an ulcer or eroded stomach – Gentamycin, metronidazole or ciprofloxacin to eradicate
• Confirm eradication with repeat endoscopy 3-6 months
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• Baby AF recovered well from surgery.
• Emphysematous changes disappeared within a few hours.
• Discharged with PPIs
• Repeat endoscopy 7-8 weeks later – complete macroscopic and histological resolution.
• This is the only reported documented case of Sarcina in an infant.
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References • Sarcina ventricularis complicating a patient status
post vertical banded gastroplasty: A case report. Journal of gastroenterology and hepatology research. 2015;4(2)
• Sarcina ventriculi of stomach: A case report. World J Gastroenterol 2013;19(14):2282-2285
• Sarcina organisms in the gastrointestinal tract: A clinicopathologic and molecular study. Am J Surg Pathol 2011;35(11):1700-1705
• Physiological Adaptations of Anerobic Bacteria to low pH:Metabolic control of proton motive force in Sarcina ventriculi. Journal of bacteriology. 1987;2150-2157.
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Thank you