Merkel cell carcinoma (MCC) of the skin is a rare but aggressive cutaneous neuroendocrine-derived malignancy that predominantly affects elderly white males. The presence of distant nodal metastases significantly impacts survival. Typical metastatic sites of MCC are liver, bone, brain and skin. Gastrointestinal metastases are uncommon and small bowel is the most common site followed by stomach. We report a case of symptomatic MCC jejunal metastasis.
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Front Oncol
December 2024
Department of Gastrointestinal Surgery, Weihai Central Hospital, Qingdao University, Weihai, Shandong, China.
Background: Sarcomatoid carcinoma of the small bowel is an exceedingly rare gastrointestinal tumor characterized by a biphasic cellular pattern of epithelioid and mesenchymal-like cells. Due to its rarity and non-specific clinical presentation, it is frequently misdiagnosed, and there is a lack of standardized management guidelines. We report a case of multiple sarcomatoid carcinoma of the small intestine, presenting initially with gastrointestinal perforation.
View Article and Find Full Text PDFVet Sci
December 2024
Department of Anatomic Pathology, Faculty of Veterinary Medicine, 400372 Cluj-Napoca, Romania.
Canine extraskeletal osteosarcomas are mesenchymal, osteoid producing tumors that can arise in soft tissues without initial involvement of the bones. An 8-year-old intact male Beagle dog presented with anorexia, abdominal pain, intermittent vomiting and melena. The patient had a history of recurrent ingestion of cotton based-toy fragments, but no prior surgical procedures involving the abdominal cavity.
View Article and Find Full Text PDFHinyokika Kiyo
November 2024
The Department of Urology, Hiroshima Prefectural Hospital.
A 26-year-old male presented to a hospital with complaints of hemoptysis and right scrotal swelling. Computed tomography (CT) revealed right testicular swelling, multiple lung metastases, and small intestinal wall thickening. The patient's β-human chorionic gonadotropin, alpha-fetoprotein, lactate dehydrogenase, and hemoglobin levels were 103.
View Article and Find Full Text PDFGut Microbes
November 2024
Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.
The consumption of high-fat diets (HFD) and an imbalance in gut microbiome are linked to obesity. However, the intricate connection between them and the underlying mechanisms involved in lipid digestion and absorption remain largely unclear. This study shows that after 12 weeks of HFD feeding, mice exhibit two distinct metabolic phenotypes with significant differences in gut microbiota composition.
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