Case Reports in Medicine The desmoids arising from the fascia show an irregular shape [23]. However, endometriosis as well as desmoids of the abdominal wall can develop without previous surgery. Granese et al. and Gourgiotis et al. described two cases of endometriotic tumors in the rectus muscle in patients who did not undergo any surgical interventions [24, 25]. A tomography or MRI can be especially helpful in the diﬀerentiation of desmoids from endometriosis [26]. Sauter et al. recently described the monitoring of the response of desmoids to a therapy with imatinib using MRI [27]. A presurgical ﬁne-needle aspiration cytology can help to avoid mistakes in the approach of the abdominal wall tumors [28]. The correlation of tumor pain and the patients menstruation and the correlation of tumor volume and menstruation can be indicators for endometriotic tumors. Especially in pregnancy, the diﬀerentiation between endometriosis and desmoid tumor can help to ﬁnd the indicated treatment options. The wait and see policy is a rational treatment option in both cases as the postpartum drop at estrogen level could lead to signiﬁcant tumor regression in desmoids and endometriosis. In large tumors, the surgical intervention can be realized without functional limitations after tumor regres- sion. In our case, the tumor resection followed the successful delivery during a preplanned cesarean section. Embryo safety has to be considered thinking about therapeutic approaches during pregnancy. 4. Conclusion The wait and see strategy is a rational treatment option in case of desmoid tumors in pregnancy. Depending on the risk factors age, tumor size, and location, the diﬀerent treatment approaches should be considered after successful delivery. The postpartum drop of estrogen level could lead to a tumor regression, which could avoid a mutilating surgery. 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