Background: Malignant melanoma is a tumor with common lymphogenic or hematogenic metastasis. Metastasis to the gastric mucosa is uncommon. Case Report: We present the case of a 43-year-old female patient with metastases of a malignant melanoma to the lesser curvature of the stomach. The primary malignant melanoma of the right breast was resected 2 years previously. Conclusion: Metastases to the gastric mucosa are rarely seen. Esophagogastroduodenoscopy should be performed in symptomatic patients to rule out metastatic disease. When R0 resection can be achieved, it should be undertaken in order to increase the overall prognosis of the patient.

Background: Recurrent rectovesical fistulas are a serious burden for the affected patient. Depending on the size and location of the fistula, the underlying disease as well as the preceding therapies, a definitive surgical treatment of the fistula should be the main goal. We analysed the technique of the transposition of the gracilis muscle as a therapeutical option. Methods: We analysed data from 3 male patients who were diagnosed with a recurrent rectovesical fistula and were treated by the transposition of the gracilis muscle in the surgical department of Klinikum Oldenburg. Results: All 3 patients suffered from prostate cancer and were already treated by a different surgical approach while one patient had a second recurrence. Complications arose in two cases in the form of fistula recurrence. Conclusion: Our study has shown that the interposition of the gracilis muscle provides an option to treat rectovesical fistulas.

Background: Retroperitoneal fibrosis is considered as one of the rare diseases, with an incidence rate of 1/200,000. A guideline for its diagnosis and therapy does not exist. In the past centuries, case studies and small-scale series have therefore been used for diagnostic purposes. Case Report: We report the case of a 45-year-old female patient who approached the emergency department complaining of flank pain. The primary diagnostics including computed tomography, magnetic resonance imaging, sonography, and laboratory testing showed a distension of the Musculus psoas and Musculus iliacus on the right side with an unclear genesis. Accessorily performed diagnostic analysis including scintigraphy and intestinal endoscopy did not provide additional information. Because of persisting complaints, a surgical exploration of the right retroperitoneal space was performed resulting in a histological diagnosis of an idiopathic fibrosis (Morbus Ormond). Conclusion: Despite the permanent improvement of diagnostic imaging in general, a surgical exploration accompanied by histological investigation is the diagnostic tool of choice in selected cases.