Laparoscopic surgery for ovarian epidermoid cyst with preservation of ovarian function

Ovarian epidermoid cyst, an extremely rare tumor occurring mostly in older females, is lined by mature stratified squamous epithelium and distinguishable from mature teratoma by the absence of skin adnexae and other tissues. In imaging, these tumors resemble solid tumors, necessitating most patients to undergo oophorectomy to verify malignancy. We herein present the case of an ovarian epidermoid cyst in a pregnant woman who underwent laparoscopic cystectomy after delivery with preserved ovarian function. To the best of our knowledge, this is the first case report of an ovarian epidermoid cyst that was detected during pregnancy and treated with laparoscopic cystectomy. Preservation of ovarian function and application of minimally invasive surgery should be strongly considered in young patients with ovarian epidermoid cysts

Prevalence of 16S rRNA methylases in Gram-negative bacteria derived from companion animals and livestock in Japan

The emergence and spread of aminoglycoside-resistant bacteria are a public health concern. The acquisition of the genes encoding 16S rRNA methylases, such as armA, rmtA, and rmtB, confers high-level resistance to aminoglycosides. However, the prevalence has not been well investigated in Japanese veterinary fields. To determine the prevalence of 16S rRNA methylases in animals, we detected 16S rRNA methylases genes in Gram-negative bacteria from animals. Here, we report the isolation of rmtB amd armA from two of the 446 Escherichia coli (0.5%) and one of the 103 Klebsiella spp. isolates (1.0%) from companion animals, respectively. However, none of the isolations were observed from 2445 E. coli isolates derived from livestock in Japan. The prevalence of 16S rRNA methylases in animals, especially in companion animals, should be carefully monitored in Japanese veterinary fields to avoid the spreading of the genes