Thyonella gemmata , also known as the Green sea cucumber, is a biomedically and ecologically important species. In this study, the complete mitogenome of T. gemmata (Echinodermata: Holothuroidea) collected from the Florida Panhandle, USA is reported. The mitochondrial genome of T. gemmata consisted of 15,696 base pairs, and was composed of 36.10% A, 28.27% T, 23.18% C, and 12.45% G. There were 13 protein coding genes, 22 tRNA genes, and 2 rRNA genes within the mitogenome of T. gemmata. Mapping out the complete mitochondrial genome of T. gemmata, will help aid in future evolutionary studies and can be applied to future phylogenetic research of holothurians and related species.

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A case of non-beta islet cell tumor of the pancreas with elevated vasoactive intestinal polypeptide (VIP) levels and WDHA syndrome (watery diarrhea, hypokalemia, and achlorhydria) was studied. Angiography and radio isotope scanning showed profuse abnormal vascularity. Ultrasonography showed a solid mass with small- to medium-sized cystic spaces. Histologic examination with special staining (Sevier-Munger) showed carcinoid tumor.