MediAI

Pseudocirrhosis  Pseudocirrhosis is a radiologic term describing morphologic changes of the liver that resemble cirrhosis, often seen in patients with hepatic metastases, especially from breast cancer, after chemotherapy. Unlike true cirrhosis, it is not due to chronic liver disease or fibrosis resulting from typical causes like viral hepatitis or alcohol, but rather is secondary to malignancy or its treatment. 1. Cause and Etiology Primary Cause: Most commonly associated with metastatic breast cancer , especially after chemotherapy. It can also be seen with other malignancies: pancreatic , colon , gastric , esophageal , neuroendocrine tumors , and lymphoma . Mechanisms (Etiologic Contributors): Chemotherapy-induced hepatic injury : including sinusoidal obstruction, regenerative nodules, and hepatic fibrosis. Desmoplastic reaction from infiltrative metastatic tumors. Tumor regression with fibrosis mimicking cirrhotic nodul...

  Acute epididymitis 1. Definition and Overview Acute epididymitis is the inflammation of the epididymis , typically of sudden onset, often caused by infection . It may involve adjacent testicular tissue (termed epididymo-orchitis ). It is a common urological condition in adult males and can cause significant pain and swelling. 2. Cause and Etiology The etiology of acute epididymitis varies by age , sexual activity , and underlying urological abnormalities . A. Infectious Causes (Most Common) Sexually Transmitted Pathogens (Younger men, <35 years): Chlamydia trachomatis Neisseria gonorrhoeae Enteric Pathogens (Older men, children, or men with urinary tract abnormalities): Escherichia coli Pseudomonas aeruginosa Klebsiella species Other Pathogens : Ureaplasma urealyticum , Mycoplasma genitalium Viral : Mumps (especially in children or adolescents) Tuberculosis (TB) : Chronic granulomatous epididymit...