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histiocyte

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BRUCELLOSIS  Bone marrow involvement in brucellosis demonstrates <span class="search-highlight">histiocyte</span>...
Published: 01 September 2024
BRUCELLOSIS Figure 14-5 BRUCELLOSIS Bone marrow involvement in brucellosis demonstrates histiocyte aggregates and poor granuloma formation. More about this image found in BRUCELLOSIS Bone marrow involvement in brucellosis demonstrates histiocyte...
Images
TYPHOID FEVER  A: Base of a cecal ulcer shows the characteristic predominan...
Published: 01 September 2024
TYPHOID FEVER Figure 13-17 TYPHOID FEVER A: Base of a cecal ulcer shows the characteristic predominance of histiocytes in the inflammatory infiltrate. B: The histiocytes (Mallory cells), which are also found in draining lymph nodes, have granular cytoplasm due to phagocytosis of necrotic debris ... More about this image found in TYPHOID FEVER A: Base of a cecal ulcer shows the characteristic predominan...
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TUBERCULOUS GRANULOMA  Central fibrillogranular (caseous) necrosis with sur...
Published: 01 September 2024
TUBERCULOUS GRANULOMA Figure 12-51 TUBERCULOUS GRANULOMA Central fibrillogranular (caseous) necrosis with surrounding palisaded epithelioid histiocytes. More about this image found in TUBERCULOUS GRANULOMA Central fibrillogranular (caseous) necrosis with sur...
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CUTANEOUS <em>LEISHMANIA</em> ULCER  Prominent peripheralization of...
Published: 01 September 2024
CUTANEOUS LEISHMANIA ULCER Figure 28-5 CUTANEOUS LEISHMANIA ULCER Prominent peripheralization of amastigotes within macrophages, with prominent histiocytes and plasma cells (A,B). More about this image found in CUTANEOUS LEISHMANIA ULCER Prominent peripheralization of...
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TUBERCULOID LEPROSY  There is a prominent perineural lymphocyte and epithel...
Published: 01 September 2024
TUBERCULOID LEPROSY Figure 15-17 TUBERCULOID LEPROSY There is a prominent perineural lymphocyte and epithelioid histiocyte infiltrate. (Courtesy of Dr. L. Tapia V, University of Antioquia, Medellín, Colombia) More about this image found in TUBERCULOID LEPROSY There is a prominent perineural lymphocyte and epithel...
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CRYPTOCOCCAL INFLAMMATORY PSEUDOTUMOR  There is a vaguely storiform prolife...
Published: 01 September 2024
CRYPTOCOCCAL INFLAMMATORY PSEUDOTUMOR Figure 20-7 CRYPTOCOCCAL INFLAMMATORY PSEUDOTUMOR There is a vaguely storiform proliferation of plump myofibroblasts and histiocytes (A) with intervening yeasts highlighted with an Alcian blue stain (B). More about this image found in CRYPTOCOCCAL INFLAMMATORY PSEUDOTUMOR There is a vaguely storiform prolife...
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LYMPH NODE INVOLVEMENT IN TULAREMIA  High-power view of a necrotizing granu...
Published: 01 September 2024
LYMPH NODE INVOLVEMENT IN TULAREMIA Figure 17-9 LYMPH NODE INVOLVEMENT IN TULAREMIA High-power view of a necrotizing granuloma with suppurative inflammation and necrosis surrounded by histiocytes. (Courtesy of the CDC IDPB) More about this image found in LYMPH NODE INVOLVEMENT IN TULAREMIA High-power view of a necrotizing granu...
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PULMONARY HISTOPLASMOSIS  Zonal granuloma formation (A) with multiple histi...
Published: 01 September 2024
PULMONARY HISTOPLASMOSIS Figure 23-4 PULMONARY HISTOPLASMOSIS Zonal granuloma formation (A) with multiple histiocytes containing a large number of intracytoplasmic Histoplasma spp yeasts (B) are highlighted by a Grocott methenamine stain (GMS) (C). More about this image found in PULMONARY HISTOPLASMOSIS Zonal granuloma formation (A) with multiple histi...
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<em>LEISHMANIA</em> AMASTIGOTES  A Giemsa stain demonstrates multip...
Published: 01 September 2024
LEISHMANIA AMASTIGOTES Figure 28-8 LEISHMANIA AMASTIGOTES A Giemsa stain demonstrates multiple Leishmania amastigotes within the cytoplasm of histiocytes. (Courtesy of Dr. L. E. Botero, Pontificia Bolivariana University, Medellín, Colombia) More about this image found in LEISHMANIA AMASTIGOTES A Giemsa stain demonstrates multip...
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<em>E. HISTOLYTICA</em> TROPHOZOITES  A cluster of E. histolytica t...
Published: 01 September 2024
E. HISTOLYTICA TROPHOZOITES Figure 26-6 E. HISTOLYTICA TROPHOZOITES A cluster of E. histolytica trophozoites in the lumen adjacent to intact mucosa in the vicinity of a colonic ulcer. Such organisms may easily be overlooked or mistaken for histiocytes/cell debris. More about this image found in E. HISTOLYTICA TROPHOZOITES A cluster of E. histolytica t...
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DISSEMINATED CUTANEOUS SPOROTRICHOSIS  The upper dermis contains large numb...
Published: 01 September 2024
DISSEMINATED CUTANEOUS SPOROTRICHOSIS Figure 24-8 DISSEMINATED CUTANEOUS SPOROTRICHOSIS The upper dermis contains large numbers of organisms, some of which have been engulfed by histiocytes. Polymerase chain reaction (PCR) studies confirmed the presence of Sporothrix schenckii. More about this image found in DISSEMINATED CUTANEOUS SPOROTRICHOSIS The upper dermis contains large numb...
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<em>MYCOBACTERIUM AVIUM</em> COMPLEX INFECTION OF THE LUNG  Promine...
Published: 01 September 2024
MYCOBACTERIUM AVIUM COMPLEX INFECTION OF THE LUNG Figure 15-33 MYCOBACTERIUM AVIUM COMPLEX INFECTION OF THE LUNG Prominent histiocyte infiltration (A) and a large number intracellular bacilli are seen with acid-fast (Ziehl-Neelsen; B) and fungal (GMS; C) silver stains. More about this image found in MYCOBACTERIUM AVIUM COMPLEX INFECTION OF THE LUNG Promine...
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CRYPTOCOCCOSIS OF THE LUNG, CENTRAL NERVOUS SYSTEM, AND SKIN  Variable infl...
Published: 01 September 2024
CRYPTOCOCCOSIS OF THE LUNG, CENTRAL NERVOUS SYSTEM, AND SKIN Figure 20-3 CRYPTOCOCCOSIS OF THE LUNG, CENTRAL NERVOUS SYSTEM, AND SKIN Variable inflammatory response ranges from granulomatous (A), lymphocytic (B), to predominantly histiocytic/foam cell (C–E), with associated fungal yeasts (F). More about this image found in CRYPTOCOCCOSIS OF THE LUNG, CENTRAL NERVOUS SYSTEM, AND SKIN Variable infl...
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<em>E. HISTOLYTICA</em> TROPHOZOITES  The associated cell debris ad...
Published: 01 September 2024
E. HISTOLYTICA TROPHOZOITES Figure 26-10 E. HISTOLYTICA TROPHOZOITES The associated cell debris adjacent to colonic mucosa shows organisms with light eosinophilic granular cytoplasm, imparting a histiocyte-like morphology. (Courtesy of A. Cardona, Hospital Pablo Tobón Uribe, Medellín, Columbia) More about this image found in E. HISTOLYTICA TROPHOZOITES The associated cell debris ad...
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EARLY FIBROSING MEDIASTINAL DISEASE DUE TO <em>HISTOPLASMA</em> SPP...
Published: 01 September 2024
EARLY FIBROSING MEDIASTINAL DISEASE DUE TO HISTOPLASMA SPP Figure 23-5 EARLY FIBROSING MEDIASTINAL DISEASE DUE TO HISTOPLASMA SPP Early lesions may show abundant histiocytes and scattered chronic inflammatory cells, which can mimic a neoplastic process, both clinically and histologically (A,B). GMS stain illustrates an unusually large number of organisms in this lesion (C). More about this image found in EARLY FIBROSING MEDIASTINAL DISEASE DUE TO HISTOPLASMA SPP...
Images
BRUCELLOSIS  A: Brucellosis of the liver shows a small non-necrotizing gran...
Published: 01 September 2024
BRUCELLOSIS Figure 14-4 BRUCELLOSIS A: Brucellosis of the liver shows a small non-necrotizing granuloma. (Courtesy of Prof. S. Lucas, London, UK) B: Lymph node involvement shows extensive necrosis with surrounding histiocytes and scattered granulomas. C: Brucella spp organisms are highlighted by a modified Steiner silver stain. (Case courtesy of Dr. B. Pritt, Mayo Clinic, Rochester, MN) More about this image found in BRUCELLOSIS A: Brucellosis of the liver shows a small non-necrotizing gran...
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DISSEMINATED <em>TALAROMYCES MARNEFFEI</em> INFECTION  A: The gut i...
Published: 01 September 2024
DISSEMINATED TALAROMYCES MARNEFFEI INFECTION Figure 19-6 DISSEMINATED TALAROMYCES MARNEFFEI INFECTION A: The gut in an immunocompromised individual shows a histiocytic infiltrate with multiple intracellular organisms, which are readily visualized with a hematoxylin and eosin (H&E) stain. B: GMS stain shows elongated fungal yeasts with cross septation and a “pill box” morphology. (Courtesy of Dr. L. Lamps, University of Michigan, Ann Arbor, MI) More about this image found in DISSEMINATED TALAROMYCES MARNEFFEI INFECTION A: The gut i...
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DISSEMINATED <em>EMERGOMYCES AFRICANUS</em> INFECTION  A: The antra...
Published: 01 September 2024
DISSEMINATED EMERGOMYCES AFRICANUS INFECTION Figure 19-8 DISSEMINATED EMERGOMYCES AFRICANUS INFECTION A: The antral mucosa in the stomach of an AIDS patient shows a pronounced histiocytic infiltrate with focal poor granuloma formation. B: Large numbers of intracellular fungal yeasts reveal focal narrow-neck to tubular budding (arrow), visible on an H&E stain. C: PAS-D highlights the focally budding, small ovoid to round yeasts (arrow). More about this image found in DISSEMINATED EMERGOMYCES AFRICANUS INFECTION A: The antra...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 20
Published: 01 September 2024
10.55418/9781933477435-20
ISBN-10: 1-933477-43-1
ISBN: 978-1-933477-43-5
...-formed epithelioid cell granulomas with scant organisms (in an otherwise healthy host) to limited inflammation associated with abundant organisms (in the immunocompromised) ( fig. 20-3 ). Granulomas often show central necrosis; have associated lymphocytes, histiocytes, and neutrophils; and show...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 20
Published: 01 September 2024
10.55418/9781933477435-23
ISBN-10: 1-933477-43-1
ISBN: 978-1-933477-43-5
... a worker on the Panama canal, although he mistook it for a disseminated protozoan infection associated with visceral pseudotubercles ( 1 ). He named the organism Histoplasma capsulatum due to its prominent intracellular accumulation in histiocytes and apparent encapsulation. Six years later, H. da...