Drug-induced injury of the gastrointestinal (GI) tract is increasingly common but generally
under-recognized. Although there is an overwhelming number of drugs that are associated …

Total mesorectal excision (TME) refers to the surgical removal of the complete perirectal soft
tissue envelope, using sharp instruments under direct vision, and has become the …

The morphologic distinction between various serrated polyps of the colorectum may be
challenging. The distinction between sessile serrated adenoma (SSA) and traditional …

Eosinophilic esophagitis in adults is a recently described entity occurring in young males
with dysphagia, in whom esophageal biopsies show eosinophilic infiltration. This study …

Mycophenolate mofetil (MMF) is a commonly used immunosuppressive drug used in the
management of transplant recipients. Although gastrointestinal (GI) toxicity is a known …

Abstract Milan and University of California at San Francisco (UCSF) criteria are used to
select patients with hepatocellular carcinoma (HCC) for liver transplantation (LT). Recurrent …

Neoplasms of perivascular epithelioid cells (PEComas) have in common the coexpression
of muscle and melanocytic immunohistochemical markers. Although this group includes …

Venous invasion (VI) is an independent prognostic indicator in colorectal cancer and may
prompt consideration for adjuvant chemotherapy in patients with stage II tumors. Recent …

The literature on gastrointestinal stromal tumors (GISTs) has rapidly expanded and has
demonstrated how scientific advancements in diagnosis can revolutionize the …

Background Phyllodes tumors (cystosarcoma phyllodes) are uncommon lesions in the
female breast. Rarely, the occurrence of carcinoma within a phyllodes tumor has been …