Gastrointestinal langerhans cell histiocytosis in an adult presenting with anal protrusion and multiple colorectal ulcers: a case report.

Langerhans cell histiocytosis (LCH) is a rare disorder characterized by the proliferation of Langerhans cells, a type of dendritic cell essential for immune response. While LCH predominantly affects children, its manifestation in adults, especially within the gastrointestinal (GI) tract, is exceedingly rare. We present a unique case of a 56-year-old female with rare GI manifestations of LCH.

Subcutaneous Panniculitis-Like T-Cell Lymphoma With Hemophagocytic Lymphohistiocytosis.

Subcutaneous panniculitis-like T-cell lymphoma (SPTLP), a unique variant of primary cutaneous T-cell lymphomas, clinically mimics subcutaneous panniculitis. It is typified by the development of multiple plaques or subcutaneous erythematous nodules, predominantly on the extremities and trunk. Epidemiological findings reveal a greater incidence in females than males, affecting a wide demographic, including pediatric and adult cohorts, with a median onset age of around 30 years.

Extrahepatic biliary tract tuberculosis: A case report and literature review.

Introduction: Tuberculosis is a chronic infectious disease that often has a latent period after the initial infection. Tuberculosis most often affects the lungs but it can also affect other parts of the body. Vietnam is in pandemic area of tuberculosis.

Ovary metastasis from lung cancer mimicking primary ovarian cancer: A rare case report.

Introduction: Ovarian metastasis from lung cancer is very rare, which might lead to a misdiagnosis as primary ovarian cancer.

Case Presentation: We report a 49-year-old woman presenting to our hospital because of a painful mass in the lower abdomen, with no respiratory symptoms. Her initial diagnosis was stage IVB ovarian cancer with pulmonary metastasis.

Rectal metastasis originating from breast cancer: A rare case report.

Introduction: Gastrointestinal tract involvement in breast cancer is rarely encountered clinically. Data about this condition is limited and mostly from case reports.

Case Presentation: We report a case of rectal metastasis originating from breast cancer, which presents after a long-term latency of initial diagnosis.

A new and efficient approach for construction of uridine/uracil auxotrophic mutants in the filamentous fungus Aspergillus oryzae using Agrobacterium tumefaciens-mediated transformation.

Aspergillus oryzae is a filamentous fungus widely used in food industry and as a microbial cell factory for recombinant protein production. Due to the inherent resistance of A. oryzae to common antifungal compounds, genetic transformation of this mold usually requires auxotrophic mutants.