Fig. 19.1. Acute spongiotic dermatitis with spongiotic microvesicles. • In acute spongiotic dermatitis, the epidermis retains its normal “basket-weave” stratum corneum. The epidermis also has pale keratinocytes and spongiosis with…
Characteristics Partial mole Early complete mole Complete mole Ploidy 3 N 2 N 2 N Villous p57KIP2 positivity + − − Dimorphic villous populations + − − Dysmorphic villi +…
(1) Department of Hematology Oncology, Quest Diagnostics Nichols Institute, 33608 Ortega Highway, San Juan Capistrano, CA 92675, USA (2) Department of Pathology, Keck School of Medicine, University of Southern California, Los…
Follicular hyperplasia Follicular lymphoma Younger patients Normal follicle density Older patients Increased follicle density (back to back) Follicles vary in size and shape Well-defined mantle zone Cellular polarization present Heterogeneous…
Fig. 4.1. Lymphoma with convoluted nuclei. Nuclear inclusions exist in various forms Viruses may be visualized by negative staining of whole particles or in thin sections. See section on nonneoplastic…
Fig. 21.1. Myositis ossificans (gross) forming a circumscribed mass with a bony shell and a hemorrhagic fibrous center (A). Myositis ossificans (micro) at frozen section a well developed “zonation” is…
Fig. 26.1. (A) Mediastinal granuloma . Enlarged, matted lymph nodes replaced by fibrocaseous granulomas (scale = 1 cm). (B) Fibrocaseous granuloma with central cavitation within lymph node. (C) Budding yeast-like organisms consistent…
Fig. 37.1. Fibroepithelial polyp of the ureter. ♦ Chronic inflammatory cell infiltrate and xanthoma cells may be present Ureteral Endometriosis Clinical ♦ Mean age at diagnosis is 51…
Fig. 11.1. Detection of the translocation t(14;18) by FISH. Fluorescent probes specific for BCL2 (red), IGH (green), and the chromosome 18 centromere (aqua = control) were hybridized to tumor cell spreads. Panel…
