A Case of Diffuse Metastatic Melanoma With Massive Spontaneous Hemoperitoneum

The incidence rate for melanoma continues to rise in the USA. The majority of melanoma cases are detected at an early stage and are amenable to surgical excision. Advanced melanoma with diffuse intraabdominal metastasis is rare. We present a case of a 50-year-old female with no known primary or history of melanoma who presented with massive intraabdominal bleeding secondary to diffuse metastatic melanoma with peritoneal implants. Diagnosing metastatic melanoma could be challenging. Clinicians should be aware of hemoperitoneum or peritoneal carcinomatosis as potential manifestations of malignant melanoma to expedite appropriate management.