{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T12:37:25Z","timestamp":1753879045817,"version":"3.41.2"},"reference-count":19,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2025,2,18]],"date-time":"2025-02-18T00:00:00Z","timestamp":1739836800000},"content-version":"vor","delay-in-days":17,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Obstet and Gynaecol"],"published-print":{"date-parts":[[2025,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>Postoperative spindle cell nodules are benign and reactive lesions that occur at the previous surgical site. It often develops like a sarcoma and is resected via highly invasive procedures. To date, there have been no published reports on the natural progression of postoperative spindle cell nodules without surgical intervention.<\/jats:p><\/jats:sec><jats:sec><jats:title>Case<\/jats:title><jats:p>A 45\u2010year\u2010old woman underwent a total abdominal hysterectomy for leiomyoma. A 5\u2010cm pelvic mass exposed in the vaginal stump developed 7\u2009weeks later, causing genital bleeding. Positron emission tomography\u2013computed tomography revealed a pelvic mass and an enlarged pelvic lymph node with high uptake. We suspected an invasive sarcoma in the pelvis. However, through a transvaginal needle biopsy, the mass was diagnosed as a postoperative spindle cell nodule posthysterectomy. The nodule slowly reduced in size and completely disappeared 9\u2009years posthysterectomy.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Correct diagnosis of this nodule with sarcomatous onset based on biopsy was important to avoid unnecessary surgeries. The lesion completely disappeared spontaneously after long\u2010term follow\u2010up.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jog.16238","type":"journal-article","created":{"date-parts":[[2025,2,19]],"date-time":"2025-02-19T01:39:51Z","timestamp":1739929191000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Resolution of pelvic postoperative spindle cell nodule with sarcomatous onset after 9\u2009years of follow\u2010up"],"prefix":"10.1111","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3077-5280","authenticated-orcid":false,"given":"Ayumu","family":"Matsuoka","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, Reproductive Medicine, Graduate School of Medicine Chiba University  Chiba 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