Gone to Guts: Osteosarcoma With Metastasis to Small and Large Intestines Presenting as Recurrent Bleeding.

Gastrointestinal involvement in osteosarcoma is uncommon, with colonic spread being particularly rare. Symptoms range from abdominal pain and obstruction to anemia and melena. Chemotherapy for metastatic lesions has not been standardized, and surgery remains the treatment for selective candidates. We describe a rare occurrence of osteosarcoma metastasizing simultaneously to the small and large intestines in a 43-year-old man who presented with recurrent gastrointestinal bleeding causing symptomatic anemia. Endoscopic examination revealed multiple nodules in the jejunum and colon consistent with metastatic osteosarcoma.

Liposarcoma Masquerading as Immunoglobulin G4-Related Disease.

This case report highlights the challenge of differentiating between immunoglobulin G4 (IgG4)-related disease (IGRD) and liposarcoma, which have similar symptoms and serological markers. A 40-year-old woman presented with right upper-quadrant pain and a retroperitoneal mass. Initial biopsy indicated increased IgG4-positive cells, leading to an IGRD diagnosis. However, the mass grew, despite prednisone treatment, prompting a repeat biopsy that revealed well-differentiated liposarcoma. Liposarcoma should be considered in patients with retroperitoneal masses and elevated IgG4 levels. Surgical resection is the primary treatment, emphasizing the need for early identification and close monitoring. Confirming IGRD or ruling out other diagnoses through histopathologic analysis is vital.

Atraumatic Intercostal and Intrathoracic Liver Herniation Related to Influenza A.

Nontraumatic and spontaneous intercostal and intrathoracic herniations are defined as protrusions of intra-abdominal contents through acquired or congenital defects of the abdominal and thoracic walls without any proceeding trauma and are sparsely reported in the literature with less than 35 detailed case reports reported in the literature worldwide. Most of these cases result from abdominal trauma and are considered surgical emergencies. The content of these herniations, as reported in the literature, have classically been lungs and intra-abdominal organs. We report a case of nontraumatic intercostal and intrathoracic liver herniation, which was managed conservatively given minimal liver injury and rapidly improving symptoms.

Helicobacter pylori-Negative MALT Lymphoma Presenting as a Massive Recurrent Gastrointestinal Hemorrhage.

Primary gastric lymphoma is rare, representing 5% of all primary gastric neoplasms. The presenting complaints of gastric mucosa-associated lymphoid tissue (MALT) lymphoma are usually nonspecific. However, life-threatening gastrointestinal bleeding from the stomach is unusual and sparsely reported. While studies reveal an indolent course, we present a case that presented with massive and recurrent hematemesis leading to hypovolemic shock secondary to endoscopically confirmed MALT lymphoma, which was treated with radiotherapy to achieve remission. She had no autoimmune diseases and tested negative for Helicobacter pylori. Our case emphasizes the importance of early diagnosis and timely intensive radiotherapy of a localized but aggressive gastric MALT lymphoma.

Corrigendum to "A Rare Case of New-Onset Ulcerative Colitis following Initiation of Secukinumab".

[This corrects the article DOI: 10.1155/2019/2975631.].