Motor vehicle collisions (MVC) cause more than one million deaths annually and an estimated 20-50 million significant injuries. They can cause blunt and penetrating trauma. Blunt diaphragmatic rupture is generally associated with multiple severe injuries due to the high force needed to cause the injury. Traumatic diaphragmatic rupture (TDR) is normally identified during advance trauma life support (ATLS) secondary survey, after other more serious injuries are identified in the primary survey. We present a case of a patient who was involved in a MVC with multiple injuries, which were treated appropriately, prior to identification and treatment of a severe right-sided diaphragm injury. Imaging showed only a persistent right hemidiaphragm elevation. Intra-operative findings consisted of complete herniation of the liver with a Grade IV, 30 cm, right-sided diaphragmatic rupture. The herniated liver was repositioned and the diaphragm primarily repaired without complication. This case highlights a severe injury from a blunt MVC and rapid successful recovery of the patient once appropriately treated.

Dedifferentiated liposarcoma (DDLS) is a high-grade sarcoma that usually arises from a well-differentiated liposarcoma, which most commonly presents as a retroperitoneal mass. DDLS involving the colon is extremely rare, and only a few cases have been reported. We present a case of a DDLS that was found in the cecum and adjacent mesentery. This aggressive sarcoma developed within six months based on computed tomography (CT) findings and initially presented as a perforated colon mass. The patient was taken for emergent exploratory laparotomy including right hemicolectomy with en bloc resection. There was no metastatic disease at time of presentation, but at three-month follow-up, CT scans demonstrated metastatic disease to the liver, lungs, and multiple peritoneal implants. This case highlights a rare form of colon cancer and its aggressive nature of progression.

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