Seminoma in an adult striped dolphin Stenella coeruleoalba: tomographic, macroscopical, histological and immunohistochemical study

2020 ◽  
Vol 140 ◽  
pp. 97-101
Author(s):  
PJ Diaz-Santana ◽  
CM Súarez-Santana ◽  
A Fernández ◽  
A Rambaldi ◽  
F Consoli ◽  
...  
Keyword(s):  
Marine Mammals ◽  
Immunohistochemical Study ◽  
Post Mortem ◽  
Testicular Seminoma ◽  
Stenella Coeruleoalba ◽  
Striped Dolphin ◽  
Wildlife Species ◽  
Nodular Lesions ◽  
The Right ◽  
Cut Surface

Testicular neoplasms have been extensively described and characterized in domestic animals, but reports in wildlife species, including marine mammals, are scarce. This case report describes a testicular seminoma in an adult striped dolphin Stenella coeruleoalba stranded along the coasts of the Canary Islands. Post-mortem computerized tomography (CT) showed a prominent enlargement of the cranial pole of the right testicle, displacing the intestinal loops. Necropsy gross findings confirmed the presence of a testicular mass, bulging at the cut surface, with multiple well-delimitated whitish nodular lesions. Histologically, intratubular and diffuse neoplastic germinative cell proliferation was described. Complementary immunohistochemical assessments for vimentin and CD117 antibodies were negative. To the authors’ knowledge, this is the first seminoma described in a S. coeruleoalba. We suggest that post-mortem (PM) pre-necropsy CT in dolphins is a useful tool for anatomic-guided pathology in such cases.

Marine mammals are natural hosts of Oceanivirga salmonicida, a bacterial pathogen of Atlantic salmon

2020 ◽  
Vol 139 ◽  
pp. 161-174
Author(s):  
R Palmer ◽  
GTA Fleming ◽  
S Glaeser ◽  
T Semmler ◽  
A Flamm ◽  
...  
Keyword(s):  
16S Rrna ◽  
Atlantic Salmon ◽  
16S Rrna Gene ◽  
Marine Mammals ◽  
Rrna Gene ◽  
Bacterial Disease ◽  
Common Dolphin ◽  
Stenella Coeruleoalba ◽  
Striped Dolphin ◽  
Natural Hosts

During 1992 and 1993, a bacterial disease occurred in a seawater Atlantic salmon Salmo salar farm, causing serious mortalities. The causative agent was subsequently named as Oceanivirga salmonicida, a member of the Leptotrichiaceae. Searches of 16S rRNA gene sequence databases have shown sequence similarities between O. salmonicida and uncultured bacterial clones from the digestive tracts of marine mammals. In the current study, oral samples were taken from stranded dolphins (common dolphin Delphinus delphis, striped dolphin Stenella coeruleoalba) and healthy harbour seals Phoca vitulina. A bacterium with growth characteristics consistent with O. salmonicida was isolated from a common dolphin. The isolate was confirmed as O. salmonicida, by comparisons to the type strain, using 16S rRNA gene, gyrB, groEL, and recA sequence analyses, average nucleotide identity analysis, and MALDI-TOF mass spectrometry. Metagenomic analysis indicated that the genus Oceanivirga represented a significant component of the oral bacterial microbiomes of the dolphins and seals. However, sequences consistent with O. salmonicida were only found in the dolphin samples. Analyses of marine mammal microbiome studies in the NCBI databases showed sequences consistent with O. salmonicida from the common dolphin, striped dolphin, bottlenose dolphin Tursiops truncatus, humpback whale Megaptera novaeangliae, and harbour seal. Sequences from marine environmental studies in the NCBI databases showed no sequences consistent with O. salmonicida. The findings suggest that several species of marine mammals are natural hosts of O. salmonicida.

Merkel cells immunohistochemical study in striped dolphin (Stenella coeruleoalba) skin

2019 ◽  
Vol 56 ◽  
pp. 1-6 ◽  
Author(s):  
E.R. Lauriano ◽  
S. Pergolizzi ◽  
M. Aragona ◽  
N. Spanò ◽  
M.C. Guerrera ◽  
...  
Keyword(s):  
Immunohistochemical Study ◽  
Merkel Cells ◽  
Stenella Coeruleoalba ◽  
Striped Dolphin

scholarly journals An incidental finding of testicular seminoma in the context of acute pulmonary embolism: a case report

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Kaitlin J. Mayne ◽  
Emma Lewis ◽  
Lewis Vickers
Keyword(s):  
Pulmonary Embolism ◽  
Venous Thromboembolism ◽  
Clinical Guidelines ◽  
Acute Pulmonary Embolism ◽  
Incidental Finding ◽  
White Male ◽  
Vena Cava ◽  
Testicular Seminoma ◽  
Computed Tomography Scanning ◽  
The Right

Abstract Background Clinical guidelines do not recommend further investigation for occult malignancy in the scenario of unprovoked venous thromboembolism in the absence of additional clinical features suggestive of malignancy. We present the case of a young gentleman with pulmonary embolism who was diagnosed with testicular seminoma despite lack of symptoms or signs suggestive of malignancy. This is a unique case describing a scenario not well documented in existing literature where contravention of clinical guidelines had a potentially advantageous outcome for the patient. Case presentation A 37-year-old white male presented with seemingly unprovoked acute pulmonary embolism with right heart strain. He did not have any predisposing factors for venous thromboembolism and did not have any symptoms or signs suggestive of malignancy. Clinical guidelines do not recommend further investigation to screen for malignancy in this scenario. Despite this, our young, otherwise healthy patient proceeded to computed tomography scanning, resulting in the diagnosis of localized testicular seminoma. Testicular ultrasound described normal-sized testes (despite a discrete lesion in the right testis), suggesting this was not detectable by the patient or clinician on routine examination. The patient was anticoagulated and had an inferior vena cava filter inserted to facilitate orchidectomy followed by adjuvant radiotherapy. Conclusions This case highlights the importance of considering malignancy in seemingly unprovoked venous thromboembolism and the availability of guidelines to direct further investigation. Our patient’s treatment was not in line with clinical guidelines and was considered a “lucky find.”

scholarly journals Isolation and characterization of metallothionein from kidney of striped dolphin, Stenella coeruleoalba.

1986 ◽  
Vol 50 (11) ◽  
pp. 2881-2885 ◽  
Author(s):  
Young-Tack KWOHN ◽  
Sunao YAMAZAKI ◽  
Akira OKUBO ◽  
Etsuro YOSHIMURA ◽  
Ryo TATSUKAWA ◽  
...  
Keyword(s):  
Stenella Coeruleoalba ◽  
Striped Dolphin ◽  
Isolation And Characterization

scholarly journals Cerebellar peduncle abscess secondary to disseminated strangles in a six-week-old miniature foal

2011 ◽  
Vol 1 (1) ◽  
pp. 12
Author(s):  
Brianne Henderson
Keyword(s):  
Animal Health ◽  
Clinical Signs ◽  
Acute Onset ◽  
Abscess Formation ◽  
Neurological Deficits ◽  
Post Mortem ◽  
Streptococcus Equi ◽  
The Central Nervous System ◽  
Cerebellar Peduncle ◽  
The Right

During a strangles outbreak within a herd of minature horses, a six week old foal developed acute onset clinical signs of sepsis and neurological deficits. The foal was euthanized and submitted for post-mortem at the Animal Health Laboratories, Guelph Ontario. Gross <em>post-mortem</em> examination noted severe bronchopneumonia, hypopyon of the right eye and a singular cerebellar peduncle abscess. Culture of the lungs and cerebellum produced a pure growth of <em>Streptococcus equi</em> ssp. <em>equi</em>. <em>Streptococcus equi</em> ssp. <em>equi</em>, the causative agent of equine strangles, produces an acute pyrexia, purulent lymphadenopathy of submandibular and retropharyngeal lymph nodes. Commonly, lymph node abscesses rupture and resolve without complication. Rarely, complications may include: dissemination of the bacteria with diffuse abscess formation, immune mediated disease (purpura haemorrhagica), rarely abscess formation within the central nervous system (CNS) can occur. These can be managed medically with appropriate antibiotics and drugs to reduce intra-cranial pressure, however surgical drainage and debulking of the abscess has been attempted successfully in a few cases.

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