No abstract

No abstract

A three-year-old female spayed labrador retriever was presented with progressive abdominal enlargement due to ascites. Clinical examination, clinical pathology, diagnostic imaging and explorative laparotomy findings were suggestive of the contemporary presence of a ruptured perinephric pseudocyst, and an intraparenchymal renal cyst in the right kidney. The dog recovered well after exploratory celiotomy with complete resection of the pseudocyst and nephrectomy, and clinical signs resolved completely. Histopathology revealed the concomitant presence of a renal cyst, lined by epithelium of tubular origin, with a pseudocystic structure adjacent to the kidney. A congenital origin of these lesions was suggested. To the authors’ knowledge, this is the first report describing ascites as the clinical presentation of a ruptured perinephric pseudocyst in a dog. Although rare, it should be considered as a differential diagnosis in dogs presenting with ascites.

Red mark syndrome (RMS) is a skin disorder affecting rainbow trout (Oncorhynchus mykiss). The present work aimed to correlate the gross skin lesions affecting 46 fish sampled from farms surveyed for RMS with their microscopic features, identifying histological parameters that may be suggestive of disease progression. Skin lesions were grossly included in one of three categories (types I, II and III) according to the progressive degree of severity. Histological parameters and anti‐proliferating cell nuclear antigen (PCNA) tissue immunoreactivity were semi‐quantitatively assessed. In the dermis, PCNA‐positive lymphocytes, fibroblasts and endothelial cells were indicative of active phlogosis. A significant increase in PCNA‐immunoreactive lymphocytes, from gross type I to type III cases, was found only in the hypodermis. The histological parameters significantly associated with the gross lesion severity were progressive loss of the epithelium and scales, recruitment of inflammatory cells in the stratum compactum, loss of architecture of the stratum compactum, perivascular and perineural granulomatous inflammation and increase in lymphocyte infiltration of the muscular layer. In the type II and type III categories, inflammation in the hypodermis and muscle displayed a granulomatous pattern, reinforcing the hypothesis of an immunopathological mechanism. The morphological diagnosis of “deep chronic dermatitis associated to panniculitis and myositis, characterised by lympho‐histiocytic and granulomatous reaction” is suggested.

Red mark syndrome (RMS) is a non‐lethal inflammatory skin disorder spreading in farmed adult rainbow trout (Oncorhynchus mykiss) and reported worldwide. The aetiology is still uncertain, but positive correlation was found between Midichloria‐like organism and RMS‐affected fish. Here, we describe the first cases of RMS in Bosnia and Herzegovina. The outbreaks under study occurred in two intensive farms during the late winter and spring of 2020. Affected fish showed signs of disease ascribable to RMS, confirmed by pathological and molecular examination.

No abstract

A two-year-old female Birman cat presented with progressive abnormal behaviour, lethargy and circling towards the left. MRI demonstrated a large, solitary, intraxial expansile thin-walled cyst, without surrounding oedema or enhancement, in the left frontoparietal region. Severe subfalcian, caudal transtentorial and foramen magnum herniation were present. The owners declined treatment and the cat was euthanased. Postmortem examination demonstrated a coenural cyst with multiple larval protoscolices molecularly confirmed as Taenia serialis. Recognition of characteristic MRI findings of feline cerebral coenurosis is necessary if antemortal diagnosis and management of this, to date, invariably fatal neurological condition is possible.

No abstract