OBJECTIVE: The purpose of this series is to present deciduosis (the formation of extrauterine decidua) as one of the differential diagnoses of a malignant tumor during pregnancy. METHODS: Two cases are described in which pregnant patients had a pelvic tumor. The lesions, which were diagnosed in the early second trimester, consisted of complex masses with an extensive blood supply and had a sonographic appearance of a malignant tumor. The high suspicion for malignancy necessitated surgical intervention. RESULTS: During surgery, the lesions were observed to be of an ovarian origin with papillary excrescences covering their exterior. The lesions were excised and sent for histologic examination. The results showed a markedly decidualized endometriotic cyst in both cases. CONCLUSIONS: This phenomenon is a diagnostic challenge and should be considered in the differential diagnosis of a malignant mass during pregnancy.
OBJECTIVE: The purpose of this series is to present deciduosis (the formation of extrauterine decidua) as one of the differential diagnoses of a malignant tumor during pregnancy. METHODS: Two cases are described in which pregnant patients had a pelvic tumor. The lesions, which were diagnosed in the early second trimester, consisted of complex masses with an extensive blood supply and had a sonographic appearance of a malignant tumor. The high suspicion for malignancy necessitated surgical intervention. RESULTS: During surgery, the lesions were observed to be of an ovarian origin with papillary excrescences covering their exterior. The lesions were excised and sent for histologic examination. The results showed a markedly decidualized endometriotic cyst in both cases. CONCLUSIONS: This phenomenon is a diagnostic challenge and should be considered in the differential diagnosis of a malignant mass during pregnancy.
Authors: Anne Elodie Millischer; Louis Marcellin; Pietro Santulli; Chloe Maignien; Mathilde Bourdon; Bruno Borghese; François Goffinet; Charles Chapron Journal: PLoS One Date: 2019-10-04 Impact factor: 3.240