scholarly journals Immunohistochemical Markers of Apoptotic and Hypoxic Damage Facilitate Evidence-Based Assessment in Pups with Neurological Disorders

2021 ◽  
Vol 8 (10) ◽  
pp. 203
Author(s):  
Ksenia Orekhova ◽  
Sandro Mazzariol ◽  
Beatrice Sussan ◽  
Massimo Bucci ◽  
Federico Bonsembiante ◽  
...  
Keyword(s):  
Supportive Therapy ◽  
B Cell Lymphoma ◽  
Neurological Deficits ◽  
Intestinal Helminth ◽  
Symptom Duration ◽  
Protein Markers ◽  
Diagnostic Challenge ◽  
Immunohistochemical Markers ◽  
Initial Symptoms ◽  
Metabolic Imbalance

Seizures in puppies often present a diagnostic challenge in terms of identifying and treating the underlying cause. Dog breeds with mutations of the MDR1-gene are known to show adverse reactions to certain drugs, yet metabolic imbalance exacerbated by physiologically immature organs and other contributing pathologies require consideration before arriving at a diagnosis. This study analysed the brains of two male, 5-week-old Australian Shepherd siblings that died after displaying severe neurological symptoms upon administration of MilproVet® to treat severe intestinal helminth infection. Despite the initial symptoms being similar, their case histories varied in terms of the symptom duration, access to supportive therapy and post-mortem interval. Histopathology and immunohistochemistry were used to obtain more information about the phase of the pathological processes in the brain, employing protein markers associated with acute hypoxic damage (β-amyloid precursor protein/APP) and apoptosis (diacylglycerolkinase-ζ/DGK-ζ, apoptotic protease activating factor 1/Apaf1, and B-cell lymphoma related protein 2/Bcl-2). The results seem to reflect the course of the animals’ clinical deterioration, implicating that the hypoxic damage to the brains was incompatible with life, and suggesting the usefulness of the mentioned immunohistochemical markers in clarifying the cause of death in animals with acute neurological deficits.

scholarly journals Investigation of an EHV-1 Outbreak in the United States Caused by a New H752 Genotype

Pathogens ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 747
Author(s):  
Nicola Pusterla ◽  
Samantha Barnum ◽  
Julia Miller ◽  
Sarah Varnell ◽  
Barbara Dallap-Schaer ◽  
...  
Keyword(s):  
Early Stage ◽  
Clinical Signs ◽  
Amino Acid Position ◽  
High Viral Load ◽  
The United States ◽  
Neurological Deficits ◽  
Diagnostic Challenge ◽  
Genotype I ◽  
Flunixin Meglumine ◽  
Nasal Secretions

Here we report on an EHV-1 outbreak investigation caused by a novel genotype H752 (histidine in amino acid position 752 of the ORF 30 gene). The outbreak involved 31 performance horses. Horses were monitored over a period of 35 days for clinical signs, therapeutic outcome and qPCR results of EHV-1 in blood and nasal secretions. The morbidity of the EHV-1 outbreak was 84% with 26 clinically infected horses displaying fever and less frequently anorexia and distal limb edema. Four horses showed mild transient neurological deficits. Clinically diseased horses experienced high viral load of EHV-1 in blood and/or nasal secretions via qPCR, while subclinically infected horses had detectable EHV-1 mainly in nasal secretions. The majority of infected horses showed a rise in antibody titers to EHV-1 during the outbreak. All 31 horses were treated with valacyclovir, while clinically infected horses further received flunixin meglumine and sodium heparin. This investigation highlights various relevant aspects of an EHV-1 outbreak caused by a new H752 genotype: (i) importance of early detection of EHV-1 infection; (ii) diagnostic challenge to assess H752 genotype; (iii) apparent benefit of valacyclovir use in the early stage of the outbreak; and (iv) weekly testing of blood and nasal secretions by qPCR in order to monitor individual infection status and lift quarantine.

Epithelioid Sarcoma Arising in a Long-Term Survivor of an Atypical Teratoid/Rhabdoid Tumor in a Patient With Rhabdoid Tumor Predisposition Syndrome

2021 ◽  
pp. 109352662098649
Author(s):  
Tiffany G Baker ◽  
Michael J Lyons ◽  
Lee Leddy ◽  
David M Parham ◽  
Cynthia T Welsh
Keyword(s):  
Epithelioid Sarcoma ◽  
Rhabdoid Tumor ◽  
Malignant Rhabdoid Tumor ◽  
Atypical Teratoid Rhabdoid Tumor ◽  
Diagnostic Challenge ◽  
Patient Demographics ◽  
Immunohistochemical Markers ◽  
Genetic Aberration ◽  
Atypical Teratoid ◽  
Rhabdoid Tumors

Rhabdoid tumor predisposition syndrome (RTPS) is defined as the presence of a SMARCB1 or SMARCA4 genetic aberration in a patient with malignant rhabdoid tumor. Patients with RTPS are more likely to present with synchronous or metachronous rhabdoid tumors. Based on the current state of rhabdoid tumor taxonomy, these diagnoses are based largely on patient demographics, anatomic location of disease, and immunohistochemistry, despite their nearly identical histologic and immunohistochemical profiles. Thus, the true distinction between such tumors remains a diagnostic challenge. Central nervous system atypical teratoid/rhabdoid tumor (AT/RT) is a rare, aggressive, primarily pediatric malignancy with variable histologic features and a well documented association with loss of SMARCB1 expression. Epithelioid sarcoma (ES) is a rare soft tissue tumor arising in patients of all ages and characteristically staining for both mesenchymal and epithelial immunohistochemical markers while usually demonstrating loss of SMARCB1 expression. To our knowledge we herein present the first documented case of a patient with RTPS who presented with metachronous AT/RT and ES.

scholarly journals Intravascular Lymphoma in Patient With Celiac Disease With Multi Glandular Involvement

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. A938-A939
Author(s):  
Mustafa Alam ◽  
Mohamad Hosam Horani
Keyword(s):  
Celiac Disease ◽  
B Cell ◽  
Cell Lymphoma ◽  
Case Reports ◽  
B Cell Lymphoma ◽  
Diagnostic Challenge ◽  
Pituitary Microadenoma ◽  
Non Hodgkin Lymphoma ◽  
Large B Cell Lymphoma ◽  
History Of

Abstract Case Presentation: The patient is a 60 year old male with a past medical history of celiac disease, paroxysmal Afib, iron deficiency, and CAD who presented with lightheadedness, dizziness, and fatigue. Notable workup revealed that the patient had Afib with RVR, a TSH of 0.189, Free t4 0.51an LDH of 2726, hemoglobin of 8.7, AST of 155, ALT of 19, WBC of 4.5, and serum iron of 20. The patient’s cardizem dose was adjusted and repeat transthoracic echocardiogram was unremarkable compared to history. The patient presented again with complaints of abdominal distension, postural dizziness, occasional night sweats, and fevers. Repeat workups revealed pancytopenia, proteinuria, hypotension, and anasarca most pronounced in the lower extremity and scrotum. Ultimately, a kidney biopsy revealed an intravascular B cell non-Hodgkin lymphoma (IVBCL). Notable repeat labs include a CRP of 44 and a failed ACTH stimulation test. A brain MRI revealed a 6mm pituitary microadenoma. The patient placed on an R-CHOP regiment and is scheduled for repeat MRI to rule out pituitary involvement. Discussion: IVBCL’s are a rare form of diffuse B cell lymphoma and remain a diagnostic challenge due to the variety of involved systems including skin, CNS, and endocrine. IVBCL is also known to not produce a mass or lymphadenopathy. Celiac disease is a known risk factor for non-Hodgkin’s lymphoma. A literature search reveals a few case reports with common themes of increased LDH and inflammatory markers, anemia, and hepatic and renal dysfunction. Postural hypotension can also be a presenting symptom due to IVBCL’s ability to infiltrate neurovascular tissue to cause autonomic neuropathy. However, in this case, the patient’s history of primary adrenal insufficiency makes this unlikely. Hypothyroidism secondary to pituitary and thyroid involvement was suspected due to TSH level suppressed enough for central hypothyroidism. Repeated MRI showed resolution of Pituitary Microadenoma post Chemo therapy. Sylvain Raoul Simeni Njonnou, Bruno Couturier, Yannick Gombeir, Sylvain Verbanck, France Devuyst, Georges El Hachem, Ivan Theate, Anne-Laure Trepant, Virginie De Wilde, Frédéric-Alain Vandergheynst, “Pituitary Gland and Neurological Involvement in a Case of Hemophagocytic Syndrome Revealing an Intravascular Large B-Cell Lymphoma”, Case Reports in Hematology, vol. 2019, 6 pages, 2019. https://doi.org/10.1155/2019/9625075 Catassi C, Fabiani E, Corrao G, et al. Risk of Non-Hodgkin Lymphoma in Celiac Disease. JAMA. 2002;287(11):1413 Khan MS, McCubbin M, Nand S. Intravascular Large B-Cell Lymphoma: A Difficult Diagnostic Challenge. J Investig Med High Impact Case Rep. 2014 Mar 6;2(1):2324709614526702. Pearce C, Hope S, Butchart J. Intravascular lymphoma presenting with postural hypotension. BMJ Case Rep. Published 2018 Jan 29.

scholarly journals Symptomatic epidural lipomatosis in ectopic Cushing's syndrome

2004 ◽  
pp. 765-769 ◽  
Author(s):  
AG Bodelier ◽  
W Groeneveld ◽  
AN van der Linden ◽  
HR Haak
Keyword(s):  
Cushing’S Syndrome ◽  
Cushing's Syndrome ◽  
Neurological Symptoms ◽  
Neurological Deficits ◽  
Pathophysiological Mechanism ◽  
Lumbar Region ◽  
Epidural Lipomatosis ◽  
Ectopic Cushing’S Syndrome ◽  
Initial Symptoms ◽  
Epidural Fat

We report a case of spinal epidural lipomatosis (SEL) caused by ectopic Cushing's syndrome and give a review of the literature. The most common cause of SEL is prolonged therapy with glucocorticoids, only a very few cases are related to endogenous Cushing's syndrome. The pathophysiological mechanism is not clear but there is a possible role for the autonomic nervous system in the stimulation of growth of epidural fat. Severe neurological symptoms which indicate myelopathy and radiculopathy can occur, but there is often a delay in diagnosis because the non-specific initial symptoms are not recognized. The epidural fat is mostly located in the thoracic and lumbar region. Magnetic resonance imaging can establish the diagnosis rapidly. In patients with severe neurological symptoms, surgical decompression of the myelum and removal of the epidural fat is the treatment of choice. Most patients have partial or complete recovery of neurological deficits after surgical treatment or after discontinuing glucocorticoid therapy; mild cases can also be treated conservatively. Routine imaging for the detection of epidural-located lipomatosis in patients at risk is probably useful.

scholarly journals Methotrexate-Associated Lymphoproliferative Disorders Mimicking Granulomatosis With Polyangiitis: A Radiological Diagnostic Challenge

2020 ◽  
pp. 014556132097068 ◽  
Author(s):  
Tomoyasu Tachibana ◽  
Tomoaki Sasaki ◽  
Yoji Wani ◽  
Yasutoshi Komatsubara ◽  
Kazunori Kuroda ◽  
...  
Keyword(s):  
Nasal Cavity ◽  
Granulomatosis With Polyangiitis ◽  
B Cell Lymphoma ◽  
Pulmonary Involvement ◽  
Lymphoproliferative Disorders ◽  
The Body ◽  
Complete Regression ◽  
Diagnostic Challenge ◽  
History Of ◽  
Enhanced Computed Tomography

Methotrexate-associated lymphoproliferative disorders (MTX-LPD) frequently involve the extranodal organs throughout the body. Among the extranodal occurrences of MTX-LPD, pulmonary involvement is most frequent. In contrast, there are only a few reports of MTX-LPD in the nasal cavity or paranasal sinuses. Moreover, there are no previous reports of MTX-LPD mimicking granulomatosis with polyangiitis (GPA) in imaging examinations. We describe a case of a 53-year-old woman with MTX-LPD mimicking GPA in the nasal cavity and lungs. She complained of left nasal obstruction and discharge, general fatigue, and continual fever for 2 months. The patient had been diagnosed with rheumatoid arthritis and received methotrexate (MTX) for over 10 years. Contrast-enhanced computed tomography revealed unenhanced masses in the nasal cavity and multiple masses with cavitary changes in the bilateral lungs, suggesting GPA. However, histological examination of the nasal lesion and a history of MTX treatment indicated a diffuse large B-cell lymphoma type MTX-LPD. Two weeks after MTX withdrawal, prominent improvements in both lesions were observed. Complete regression of the nasal lesion was observed 3 months after discontinuation of MTX. Thus, MTX-LPD may mimic GPA in imaging examinations.

scholarly journals High Grade Serous Carcinoma Presenting as a Huge Pelvic Mass with Normal Looking Ovaries: A Diagnostic Challenge for Pathologist

2020 ◽  
Author(s):  
Vaishali Walke ◽  
Amrapali Gaikwad ◽  
Madiha Shaikh ◽  
Balwant Kowe
Keyword(s):  
Correct Diagnosis ◽  
Diagnostic Delay ◽  
Delayed Diagnosis ◽  
Pelvic Mass ◽  
Clinical Findings ◽  
Serous Carcinoma ◽  
High Grade ◽  
Diagnostic Challenge ◽  
Immunohistochemical Markers ◽  
Specific Symptoms

High-grade serous carcinoma represents 50-60% of all ovarian cancers and is the most common type of malignant surface epithelial tumour. Serous carcinoma is often diagnosed in the sixth and seventh decade, while the mean age for high-grade tumours is 63 year. It’s not only the non-specific symptoms like vague abdominal pain, nausea, gastrointestinal disturbances, but also the unusual presentation which is responsible for delayed diagnosis. This diagnostic delay can become the reason for increased mortality, despite advances in surgical management and chemotherapy. Here, authors discuss a case of 60-year-old postmenopausal women who presented with a huge pelvi-peritoneal mass and with grossly normal ovaries. Considering clinical findings and histomorphology, the possibility of malignant mesothelioma was considered as the first differential diagnosis; however extensive sampling of ovaries and supportive immunohistochemical markers helped us to arrive at a definitive diagnosis. The present case emphasises the importance of extensive tissue sampling and ancillary techniques in arriving at a correct diagnosis.

scholarly journals A Rare Case of Spontaneous Remission and Relapse of a Primary Central Nervous System Lymphoma

2018 ◽  
Vol 31 (12) ◽  
pp. 777 ◽  
Author(s):  
Rui Ramos ◽  
João Soares Fernandes ◽  
Marta Almeida ◽  
Rui Almeida
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Rare Case ◽  
Central Nervous System Lymphoma ◽  
Brain Biopsy ◽  
B Cell Lymphoma ◽  
Spontaneous Remission ◽  
Neurological Deficits ◽  
Pubmed Search ◽  
The Central Nervous System

Primary central nervous system lymphoma remission after steroid treatment is a well-known phenomenon, but remission without any type of treatment is extremely rare. We present a rare case of spontaneous remission of a diffuse large B-cell lymphoma of the central nervous system as well as its subsequent reappearance in another location. The atypical presentation misled the neurosurgeons and neurologists, delaying diagnosis and treatment. The patient underwent brain biopsy after the relapse and started radiotherapy and chemotherapy with cytarabine + methotrexate + rituximab. As of 32 months after the diagnosis, the patient remained asymptomatic, with no focal neurological deficits and the disease in complete remission. A PubMed search of the literature up to June 2017 regarding spontaneous remission central nervous system lymphoma was also carried out.

scholarly journals Immunohistochemical Markers of Tumor Microenvironment as Prognostic Predictors in Diffuse Large B-Cell Lymphoma: Study from an Oncology Centre in South India

2020 ◽  
Author(s):  
Indu R. Nair ◽  
Athulya Sadeesh ◽  
Pooja Phalak ◽  
Pavithran Keechilat
Keyword(s):  
Tumor Microenvironment ◽  
B Cell ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Cell Of Origin ◽  
Chop Regimen ◽  
Immunohistochemical Markers ◽  
Stromal Microenvironment ◽  
Large B Cell Lymphoma ◽  
Large B Cell

Abstract Introduction Diffuse large B-cell lymphoma (DLBCL) accounts for 60% of lymphomas in India. Although the survival of DLBCL patients has improved following the addition of rituximab, a subset of patients do not respond well to therapy. Among the several factors responsible for this varied response, tumor microenvironment is considered to be crucial. This study is a search for such prognostic markers in the tumor microenvironment. Materials and Methods A total of 97 patients were selected, of whom 34 were treated with the CHOP regimen and 63 with RCHOP. Immunohistochemistry for CD68 was performed to study the stromal-1 signature and CD34 for stromal-2 signature. Results There was a significant increase in the counts of CD68-positive cells among patients free of events. CD34 count was higher in patients with events in both CHOP and RCHOP groups. Conclusion Additional assessment of stromal microenvironment along with the cell of origin might predict the clinical outcome better in DLBCL.

Micturition Disturbance: A Predominant Feature of Acute Disseminated Encephalomyelitis

2021 ◽  
Author(s):  
Sandesh Kini ◽  
Ramesh Y. Bhat ◽  
Lakshmikanth Halegubbi Karegowda
Keyword(s):  
Urinary Retention ◽  
Supportive Therapy ◽  
Febrile Illness ◽  
Complete Recovery ◽  
Acute Disseminated Encephalomyelitis ◽  
Bladder Function ◽  
Neurological Deficits ◽  
Long Time ◽  
Characteristic Features ◽  
Magnetic Resonance Imaging Mri

AbstractUrinary retention in children can have varied etiology ranging from anatomic to functional causes. Functional causes include neuropathies, including rare central nervous system (CNS) involvement, such as acute disseminated encephalomyelitis (ADEM). ADEM is usually preceded by acute viral infection and commonly presents with multifocal neurological deficits. The ADEM diagnosis is mainly based on the clinical presentation and its correlation with characteristic CNS findings on magnetic resonance imaging (MRI). Here, we report an adolescent boy who presented with acute urinary retention preceded by an acute febrile illness. The patient was worked up thoroughly, including an MRI of the brain and spine, which revealed ADEM's characteristic features. The bladder function was evaluated periodically. The voiding dysfunction persisted for a long time. Treatment with steroids and other supportive therapy ultimately lead to a complete recovery over 6 months.

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