Pseudocarcinomatous hyperplasia associated with primary lymphoma in the urinary bladder: a case report.
A case of pseudocarcinomatous hyperplasia of the urothelium associated with primary extranodal marginal-type lymphoma of the urinary bladder in an 81-year-old man is described. To the best of our knowledge, this is the first report in the literature of a primary lymphoma of the bladder associated with pseudocarcinomatous hyperplasia of the urothelium, closely mimicking the nested variant of urothelial carcinoma. The lesion enters in the differential diagnosis with a collision tumor, which has been described rarely in the bladder.
Section of Pathological Anatomy, Polytechnic University of the Marche Region, School of Medicine, United Hospitals, 60126 Ancona, Italy. Electronic address: r.montironi@univpm.it.
Rodolfo
R
Montironi
Medical Oncology, Polytechnic University of the Marche Region, School of Medicine, United Hospitals, 60126 Ancona, Italy.
Matteo
M
Santoni
Section of Pathological Anatomy, Polytechnic University of the Marche Region, School of Medicine, United Hospitals, 60126 Ancona, Italy.
Gaia
G
Goteri
Section of Pathological Anatomy, Polytechnic University of the Marche Region, School of Medicine, United Hospitals, 60126 Ancona, Italy.
Roberta
R
Mazzucchelli
Department of Surgery, Cordoba University Medical School, 14014 Cordoba, Spain.
Antonio
A
Lopez-Beltran
Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, 46202 Indianapolis, IN.
Liang
L
Cheng
Section of Pathological Anatomy, Polytechnic University of the Marche Region, School of Medicine, United Hospitals, 60126 Ancona, Italy.
Marina
M
Scarpelli
D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis; D001706:Biopsy; D002277:Carcinoma / Q000473:pathology*; D003937:Diagnosis, Differential; D006801:Humans; D006965:Hyperplasia; D007150:Immunohistochemistry; D008223:Lymphoma / Q000737:chemistry / Q000473:pathology*; D008297:Male; D009367:Neoplasm Staging; D011237:Predictive Value of Tests; D014057:Tomography, X-Ray Computed; D001749:Urinary Bladder Neoplasms / Q000737:chemistry / Q000473:pathology*; D019459:Urothelium / Q000737:chemistry / Q000473:pathology*
D014408:Biomarkers, Tumor
Bladder; Bladder cancer; Collision tumor; Lymphoma; Pseudocarcinomatous hyperplasia; Urothelial carcinoma