title: Pigmented hepatocellular adenoma with complete CD34 immunostaining pattern: a diagnostic dilemma.
abstract: WHO defines hepatocellular adenoma (HCA) as a benign tumor composed of cells closely resembling normal hepatocytes, which are arranged in plates separated by sinusoids. It is more common in women. The present concerns a 41 years female who was found to have a mass lesion in liver on ultrasound while undergoing routine evaluation for dyspepsia. Computed tomography scan of abdomen showed 10×8 cm lesion in liver. Extended left hepatectomy was performed. Grossly hepatic cut surface showed circumscribed tumor with dark gray or black color. Microscopy revealed hepatocellular adenoma with abundant Dubin Johnson like pigment deposition. CD34 immunostaining showed complete sinusoidal pattern. We labeled the tumor as pigmented hepatic adenoma with complete CD34 staining pattern. To the best of author's knowledge only eight cases of pigmented hepatocellular adenoma are described in world literature.
authors: Department of Pathology, Global Hospital and Health City, Chennai, Tamil Nadu, India.
authors: Mukul
authors: M
authors: Vij
authors: Sushma
authors: S
authors: Patra
authors: Mohamed
authors: M
authors: Rela
mesh_terms: D018248:Adenoma, Liver Cell / Q000175:diagnosis* / Q000473:pathology* / Q000601:surgery; D000328:Adult; D014408:Biomarkers, Tumor / Q000032:analysis; D005260:Female; D051157:Frizzled Receptors / Q000032:analysis*; D006498:Hepatectomy; D006651:Histocytochemistry; D006801:Humans; D007150:Immunohistochemistry; D008099:Liver / Q000473:pathology*; D008113:Liver Neoplasms / Q000175:diagnosis* / Q000473:pathology* / Q000601:surgery; D008853:Microscopy; D011860:Radiography, Abdominal; D014057:Tomography, X-Ray Computed
chemical_list: D014408:Biomarkers, Tumor; C549560:FZD9 protein, human; D051157:Frizzled Receptors