Term
| Rectangular, crystal-like cytoplasmic inclusions in Leydig cells |
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Definition
| Reinke crystals (Leydig cell tumor) |
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Term
| Renal epithelial casts in urine |
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Definition
| Acute toxic/viral nephrosis |
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Term
| Rhomboid crystals, positively birefringent |
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Definition
| Pseudogout (calcium pyrophosphate dihydrate) |
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Term
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Definition
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Term
| Ring-enhancing brain lesions in AIDS |
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Definition
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Term
| Sheets of medium-sized lymphoid cells ("starry sky" appearance on histology) |
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Definition
| Burkitt's lymphoma (t[8:14] c-myc activation, associated with EBV; "black sky" made up of malignant cells) |
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Term
| Silver-staining spherical aggregations of tau protein in neurons |
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Definition
| Pick bodies (Pick's disease: progressive dementia, changes in personality) |
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Term
| "Soap bubble" in femur or tibia on Xray |
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Definition
| Giant cell tumor of the bone |
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Term
| "Spikes" on basement membrane, "dome-like" subepithelial deposits |
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Definition
| Membranous glomerulonephritis |
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Term
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Definition
| Rouleaux formation (high ESR, Multiple myeloma) |
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Term
| Stippled vaginal epithelial cells |
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Definition
| "Clue cells" Gardnerella vaginalis |
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Term
| "Tennis racket" shaped cytoplasmic organelles (EM) in Langerhans cells |
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Definition
| Birbeck granules (histiocytosis X: eosinophilic granuloma) |
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Term
| Thrombi made of white and red layers |
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Definition
| Lines of Zahn (arterial thrombus, layers of platelets/RBCs) |
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Term
| "Thumb sign" on lateral Xray |
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Definition
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Term
| Thyroid like appearance of kidney |
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Definition
| Chronic bacterial pyelonephritis |
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Term
| "Tram-track" appearance on LM |
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Definition
| Membranoproliferative glomerulonephritis |
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Term
| Triglyceride accumulation in liver cell vacuoles |
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Definition
| Fatty liver disease (alcoholic or metabolic syndrome) |
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Term
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Definition
| CLL (almost always B cell; affects the elderly) |
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Term
| "Wire loop" glomerular appearance on LM |
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Definition
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Term
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Definition
| Xanthochromia (previous subarachnoid hemorrhage) |
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