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Tumor fibroso calcificante intestinal: reporte de caso
(Elsevier, 2023)
Cantú-Soriano, Gonzalo Nathaniel
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Padilla Rodríguez, Álvaro Lezid
Calcifying fibrous tumor (CFT) is a rare benign lesion of mesenchymal origin that may present similar characteristics to other more common tumors. We present the case of a 36-year-old woman with a tumor in the proximal jejunum, initially suspected to be a gastrointestinal stromal tumor (GIST). Surgical resection was performed, revealing a well-demarcated nodule at the anti-mesenteric border with microscopic features typical of a calcifying fibrous tumor. The tumor cells were positive for CD34 and negative for other markers, differentiating it from other neoplasms. Calcifying fibrous tumors can be confused with more common tumors because of its appearance, but an accurate diagnosis supported by immunohistochemistry is essential. Complete surgical excision is usually curative. © 2023 Sociedad Española de Anatomía Patológica. ©Elsevier
9 1
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Primary Cutaneous Anaplastic Large Cell Lymphoma—A Review of Clinical, Morphological, Immunohistochemical, and Molecular Features
(MDPI, 2023)
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Pina-Oviedo, Sergio
Primary cutaneous anaplastic large cell lymphoma (ALCL) is the second most common cutaneous T-cell lymphoma after mycosis fungoides and belongs to the spectrum of cutaneous CD30+ T-cell lymphoproliferative disorders. Although primary cutaneous ALCL usually presents as a localized nodule or papule with or without ulceration, multifocal lesions may occur in up to 20% of cases. Histologically, primary cutaneous ALCL consists of a diffuse dermal infiltrate of medium to large anaplastic/pleomorphic cells with abundant amphophilic-to-eosinophilic cytoplasm, horseshoe-shaped nuclei, strong and diffuse expression of CD30, and with focal or no epidermotropism. The neoplastic infiltrate may show angiocentric distribution and may extend to the subcutis. Patients with localized or multifocal disease have a similar prognosis with a 10-year overall survival rate of 90%. Approximately 30% of primary cutaneous ALCLs harbor a DUSP22 (6p25.3) gene rearrangement that results in decreased expression of this dual-specific phosphatase, decreased STAT3 activation, and decreased activity of immune and autoimmune-mediated mechanisms regulated by T-cells. © Cancers
Scopus© Citations 6 9 2
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Tumor adenomatoide del aparato genital. Estudio clinicopatológico e inmunohistoquímico de 9 casos
(2006)
Canedo-Patzi, Ana Marcela
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De León-Bojorgea, Beatriz
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Objetive: Describe the histological and immunohistochemical features of nine genital tract adenomatoid tumors . Material and methods: Nine cases of adenomatoid tumors were collected from the files of the Pathology department at a private hospital (ABC Hospital). Tumors were studied from a histological and inmunohistochemical perspective. Results: Eight women and one man were studied. Age range was 28–54 yrs. Tumors were located in the uterus (seven), fallopian tube (one) and epididymis (one). Tumor size ranged from 0.4 to 5.8 cm. We observed three histological patterns: adenoid, angiomatoid and solid. Arrangement of the neoplastic tubules around fascicles of smooth muscle; angiomatoid pattern with a peripheral location, and solid and adenoid patterns with a central location in the tumor were some of the observed histological features. Immunohistochemically all tumors exhibited strong and diffuse positivity for calretinin and AE1/AE3. Thrombomodulin was positive in all tumors (focal and weak in angiomatoid pattern and diffuse and strong in adenoid and solid patterns). The CK5/6 antibody was positive in seven tumors (diffuse in three and focal in four). Two tumors were negative for this marker. All tumors were negative for CD31.©Gaceta Médica de México
13 1
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Características histopatológicas e inmunohistoquímicas de los mixomas cardiacos
(2013)
Hernández-Bringas, Omar
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Mixomas are the most common primary cardiac tumors with an estimate incidence of 0,5-1 per 10(6) individuals per year. These tumors have generated interest due to their unique location (left side of the atrial septum near the fossa ovalis), variable clinical presentation and undefined histogenesis. Most cardiac myxomas occur sporadically while approximately 10% of diagnosed cases develop as part of Carney complex. This neoplasm is of uncertain histogenesis, however, endothelial, neurogenic, fibroblastic, and cardiac and smooth muscle cells differentiation has been proposed, and rarely glandular differentiation has been observed. Recently, due to the expression of certain cardiomyocyte-specific factors, an origin of mesenchymal cardiomyocytes progenitor cells has been suggested. Histologically cardiac myxomas are mainly composed of stellated, fusiform and polygonal cells, immersed in an amorphous myxoid matrix. Immunohistochemically some endothelial markers, such as CD31, CD34, FVIIIAg, are present. Positive staining has also been reported for S-100 protein, calretinin, vimentin, desmin, smooth muscle myosin, CD56, α1 antitrypsin and α 1antichymotrypsin. Surgical resection is currently the only treatment of choice. We present in this article a histopathological and immunohistochemical review of cardiac myxomas. Copyright © 2012 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.
Scopus© Citations 15 12 1
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Linfoma anaplásico de células grandes : estudio clínico-patológico e inmunohistoquímica de 20 casos clasificados de acuerdo a la revisión de la Organización Mundial de la Salud de neoplasias linfoides de 2016
(2022)
Sevilla Lizcano, Diana Brisa
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Anaplastic large cell lymphoma (ALCL) is a type of non-Hodgkin lymphoma composed of CD30-positive neoplastic cells. The 2016 revision of the WHO classification of lymphoid neoplasms includes anaplastic lymphoma kinase (ALK) positive, ALK negative and breast implant associated ALCL. ALCL have distinct clinical and prognostic features between positive and negative cases. ALK-1 positive cases mostly occur in the first three decades of life while patients with ALK-1 negative are older. ALCL exhibit a very broad range of cytology appearances that include common pattern, lymphohistiocytic pattern, small-cell pattern, Hodgkin-like pattern and composite pattern. By definition, ALCL show strong CD30 staining on the cell membrane and in the Golgi region and the majority are epithelial membrane antigen positive, express one or more T-cell or Natural Killer antigens and are constantly negative for Epstein-Barr virus. We present the clinicopathologic and immunohistochemical analysis of 20 cases of ALCL studied at a single institution, classified according to the 2016 revision of lymphoid neoplasms. Nine cases were ALK-1 positive, ten ALK-1 negative, and one case as a breast implant associated ALCL ALK-1 negative. © 2017 Sociedad Mexicana de Oncología.
Scopus© Citations 1 14 2
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Immunohistochemistry in Historical Perspective: Knowing the Past to Understand the Present
(2021)
Immunohistochemistry is an extraordinary and extensively used technique whereby antibodies are used to detect antigens in cells within a tissue section. It has numerous applications in medicine, particularly in cancer diagnosis. It was Albert Hewett Coons, Hugh J Creech, Norman Jones, and Ernst Berliner who conceptualized and first implemented the procedure of immunofluorescence in 1941. They used fluorescein isothiocyanate (FITC)-labelled antibodies to localize pneumococcal antigens in infected tissues. Since then, with improvement and development of protein conjugation, enzyme labels have been introduced, such as peroxidase and alkaline phosphatase. The history of immunohistochemistry (IHC) combines physiology, immunology, biochemistry, and the work of various Nobel Prize laureates. From von Behring who was awarded de first Nobel Prize in 1901 for his work on serum therapy to the 1984 Nobel Prize for the discovery of monoclonal antibodies by Milstein, Kohler, and Jerne, IHC is a story of cooperation and collaboration which led to the development of this magnificent technique that is used daily in anatomical pathology laboratories worldwide. © Springer Nature.
Scopus© Citations 6 10 1
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Tumor híbrido de la vaina del nervio periférico, con componentes de schwannoma mixoide, schwannoma tipo neuroblastoma y perineuroma
(2021)
Macari-Jorge, Andrés
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A 43-year-old female presented with an oval eccentric solid lesion fixed to the submandibular gland. The tumor was composed of bland spindle cells embedded in a myxoid stroma with focal areas showing large cellular rosettes. Both areas were positive for S100 protein and glial fibrillary acidic protein. Some of the elongated spindle cells were also positive for epithelial membrane antigen, and glucose transporter 1, indicating perineurial cell differentiation. A diagnosis of hybrid tumor with myxoid schwannoma, neuroblastoma-like schwannoma and perineuroma components was rendered. The lesion was resected completely and has not recurred after eight months of resection. ©Gaceta Mexicana de Oncología
Scopus© Citations 1 12 1
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Análisis histopatológico e inmunohistoquímico del tumor de células granulares. Estudios de 12 casos con una breve nota histórica
(2019)
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Frías-Soria, Christian Lisette
Introduction and objective: Granular cell tumour (GCT) is a benign neoplasm of neural/schwannian origin, usually presenting as a single asymptomatic lesion, mainly located in the dermis and subcutaneous tissue or submucosa, although multiple tumours may occur. Microscopically, GCTs are composed of large cells with abundant eosinophilic, granular cytoplasm arranged in sheets, nests, cords or trabeculae. Based on the cytological characteristics and the presence of necrosis, three types are recognized: benign, atypical and malignant. We aim to present the cytological and immunohistochemical characteristics of 12 granular cell tumours. Materials and methods: 12 cases of GCT were selected from the consultation files of one of the authors (COH) The paraffin embedded tissue was processed for immunostaining with S-100 protein, calretinin, CD68, α-inhibin, PGP9.5, CD57 (Leu7), CD63 (NKI / C3), Gap43 (growth-associated protein-43), SOX10, TFE-3 and Ki-67. © Revista Española de Patología
Scopus© Citations 3 46 1

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