Results 71 to 80 of about 7,018 (165)

ASPSCR1: TFE3 Fusion‐Positive Epithelioid Angiomyolipoma/PEComa Lacking Melanocytic Markers: A Case Report

IJU Case Reports, Volume 9, Issue 4, July 2026.
ABSTRACT Introduction Epithelioid angiomyolipoma is a rare perivascular epithelioid cell tumor subtype with malignant potential. Its morphology mimics renal cell carcinoma, posing diagnostic challenges. Half of these cases harbor TSC1/TSC2 alterations, and a small subset features TFE3 rearrangements, mutually exclusive of TSC mutations.
Yuka Kondo, Yoji Nagashima, Kenji Zennami, Megumi Sato, Sayaka Sumiyoshi, Akihiko Sugimoto, Madoka Isomura, Kiyoshi Takahara, Sachiko Minamiguchi   +8 more
wiley   +1 more source

False-positive immunostaining of normal epithelia and carcinomas with ascites fluid preparations of antimelanoma monoclonal antibody HMB45

, 1991
HMB45 is a melanoma-specific monoclonal antibody that has found widespread use in diagnostic pathology. Recent reports, however, have suggested that this antibody may cross-react with a small number of carcinomas and other epithelial cells.
SCARPA, Aldo, BONETTI, Franco, BACCHI C., MARTIGNONI, Guido, MOMBELLO, Aldo, GOWN A., Pea, Maurizio, COLOMBARI R., ZAMBONI, Giuseppe, PIUBELLO Q.   +9 more
core   +1 more source

Mucosal Melanoma of Head and Neck: A Rare and Aggressive Disease—A Register‐Based Cohort Study

Journal of Oral Pathology &Medicine, Volume 55, Issue 6, Page 676-681, July 2026.
ABSTRACT Background Mucosal melanomas of the head and neck are rare and often diagnosed in the advanced stage. This study examines the incidence, survival and histology of mucosal melanoma compared to its cutaneous counterpart. Methods This register‐based cohort study reviews head and neck melanomas at Helsinki University Hospital, Finland, from 2002 ...
Sara C. Degerholm, Tuula A. Salo, Matti O. Mauramo   +2 more
wiley   +1 more source

Amelanotic subungual melanoma becoming clinically apparent within 24 h after minor blunt trauma: a case report

Frontiers in Medicine
Amelanotic subungual melanoma (ASM) is a rare variant of nail unit melanoma (NUM) lacking melanin pigmentation, frequently misdiagnosed as a benign post-traumatic or infectious lesion.
Huiru Wang, Peng Wang, Yanyan Suo, Kang Lu, Qingfeng Xue, Huahua Li, Rui Gao, Yunchang Guo, Songjia Qu, Xiaowei Cai   +9 more
doaj   +1 more source

The role of immunohistochemistry in medullomyoblastoma – a case series highlighting divergent differentiation

Diagnostic Pathology, 2008
Aims To analyse the histo-morphology of cases of medullomyoblastoma and identifying its divergent differentiation. Methods A retrospective review of all cases reported as medulloblastoma between the period of Jan 2000 to Dec 2006 was carried out on ...
Chhabra Rajesh, Radotra Bishan D, Rangan Aruna, Vankalakunti Mahesha, Sachdeva Man Updesh S, Vasishta Rakesh K   +5 more
doaj   +1 more source

L'anticorpo monoclonale correlato ai melanociti HMB45 è caratteristicamente espresso nell'angiomiolipoma renale

, 1990
L'anticorpo monoclonale correlato ai melanociti HMB45 è caratteristicamente espresso nell'angiomiolipoma ...
M. Pea, A. Mombello, G. Zamboni, R. Colombari, F. Bonetti, A. Scarpa, L. Fiore Donati, BIANCHI, Giampaolo, M. Bonzanini, C. Tallarigo, D. Ferrari   +10 more
core  

Angiomyolipoma with Epithelial Cysts (AMLEC) of the Kidney [PDF]

, 2016
A 49-year-old man was demonstrated to have two tumors in the right kidney by computed tomographic scan during an examination for cholelithiasis. One was a fat rich solid tumor which was clinically diagnosed as angiomyolipoma, and the other was an ...
武井, 一城, 清水, 進一, 大月, 寛郎   +2 more
core   +1 more source

Three mutations in SASH1 cause the pathogenesis of dyschromatosis universalis hereditaria (DUH) [PDF]

, 2011
Dyschromatosis universalis hereditaria (DUH) is a rare genodermatosis characterized by hyper- and hypopigmented macules which form a reticulate or mottled pattern.
Zhiyun Wei, Qinghe Xing, Dingan Zhou
core  

Immunohistochemical characterization of benign activation of junctional melanocytes and melanoma in situ of the nail unit

, 2019
Background: Immunohistochemical (IHC) stains that distinguish benign, pigmented nail lesions from malignancy are needed. Candidate markers of malignant transformation include p16, HMB45, and Ki-67, with p16 being of particular interest.
Chu, Alex, Leachman, Sancy, Josette André, Rich, Phoebe, Sancy Leachman, Curtis T. Thompson, Thompson, Curtis T, André, Josette, Phoebe Rich, Alex Chu   +9 more
core   +1 more source

Angiomyolipomes épithélioïdes rénal bénin: à propos de deux cas

The Pan African Medical Journal, 2015
Les angiomyolipomes épithélioïdes rénaux (AMLeR) sont des tumeurs rares (identifiées chez moins de 0,1 patients pour 1000 habitants) et représentent 8% des angiomyolipomes (AML) opérés.
Tidiani Bagayogo, Yddoussalah Othmane, Karmouni Tarik, Elkhader Khalid, Koutani Abdellatif, Ibn Attya Andaloussi Ahmed   +5 more
doaj   +1 more source