Aims: To compare the density of neuroendocrine cells in rectal biopsy specimens from human immunodeficiency virus (HIV) infected individuals with that of a control group.
Methods: Neuroendocrine cells in rectal biopsies were identified using an immunohistochemical stain for chromogranin and subsequently quantified using a method of linear intercept.
Results: Neuroendocrine cells were found to be significantly decreased in the HIV positive group.
Conclusions: Loss of neuroendocrine cells may contribute to apoptotic bodies seen in this condition. This could be related to infection of these cells with HIV and could contribute to diarrhoeal disease in HIV infection.
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http://dx.doi.org/10.1136/jcp.45.6.524 | DOI Listing |
Gan To Kagaku Ryoho
February 2025
Dept. of Surgery, Kansai Rosai Hospital.
A 50-year-old female presented with abdominal pain. Upper gastrointestinal endoscopy revealed a 30 mm ulcerative lesion extending from the duodenal bulb to the descending portion, and biopsy confirmed poorly differentiated adenocarcinoma. Abdominal contrast-enhanced CT scan showed an hypovascular tumor in the pancreatic head with suspected invasion into the duodenum, along with enlarged #8 lymph node.
View Article and Find Full Text PDFBackground: Neuroendocrine carcinomas (NECs) are rare tumors from hormone-secreting neuroendocrine cells, often within the gastrointestinal tract. The authors report what is, to their best knowledge, the first case of a small intestine NEC metastasizing to the temporomandibular joint (TMJ).
Case Description: A 60-year-old man came to the oral medicine, oncology, and orofacial pain clinic with a chief concern of left-sided jaw pain.
J Endocr Soc
March 2025
Division of Endocrinology and Metabolism, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Context: Cells derived from neural crest populate several organs. A particular precursor cell, sympathogonia, gives rise to pheochromoblasts and neuroblasts. Due to common origin, tumors originating from pheochromoblasts, such as pheochromocytoma (PHEO) and paraganglioma (PGL), may rarely coexist with ganglioneuroma (GN).
View Article and Find Full Text PDFBMC Gastroenterol
March 2025
Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Higashi-Ku, Fukuoka, Japan.
Background: Gastrointestinal neuroendocrine tumors (GI-NETs) are slow-growing tumors with the potential for malignancy that originate from neuroendocrine cells. Therefore, early diagnosis and treatment of GI-NETs are necessary to prevent metastasis. The widespread use of colonoscopy, which allows early detection of rectal neuroendocrine tumors (rNETs) that are small enough to be treated endoscopically, has resulted in an increasing rate of endoscopic resection of rNETs.
View Article and Find Full Text PDFInt J Radiat Oncol Biol Phys
March 2025
Department of Physics, The University of Adelaide, Adelaide SA 5005, Australia; Allied Health & Human Performance, University of South Australia, Adelaide SA 5001, Australia.
Purpose: [Ac]Ac-DOTATATE is a promising treatment option for patients with neuroendocrine tumors. A concern with Ac is that the decay energy can break the bond to the targeting vehicle, producing free daughter radionuclides in the body. Daughter migration is generally not considered in clinical dosimetry, and therefore its effect needs to be studied.
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