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The patient was urgently transferred to the operating room for a video laparoscopy. A vast left retroperitoneal haematoma was diagnosed along with voluminous enlargement of the left ovary. We proceeded with a left adnexectomy and blood transfusion. Subsequent contrast-enhanced CT revealed a left subcapsular, perirenal haematoma and a voluminous retroperitoneal haematoma. Kidney metastasis was also seen. The final histological diagnosis was metastatic amelanotic malignant melanoma of the ovary.<\/jats:p>","DOI":"10.1136\/bcr-2020-238983","type":"journal-article","created":{"date-parts":[[2021,1,27]],"date-time":"2021-01-27T12:37:01Z","timestamp":1611751021000},"page":"e238983","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Spontaneous subcapsular and perirenal haemorrhage with retroperitoneal haematoma in a patient with ovarian melanoma metastases"],"prefix":"10.1136","volume":"14","author":[{"given":"Stefania","family":"Malmusi","sequence":"first","affiliation":[{"name":"Obstetrics and Gynecology, Sassuolo Hospital, Sassuolo, Emilia-Romagna, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mirvana","family":"Airoud","sequence":"additional","affiliation":[{"name":"Obstetrics and Gynecology, Sassuolo Hospital, Sassuolo, Emilia-Romagna, 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