Date: 26 November 2013
Nasal, sinus and orbital aspergillosis in a cat. The left nasal cavity and sinus were full of pus and debris and there was severe bone erosion from the nasal cavity into the rostromedial orbitthrough which pus was protruding
Copyright:
(Kindly provided by Martin L. Whitehead, BSc, PhD, BVSc, CertSAM, MRCVS & Peter W. Kettlewell, BVSc, MSc, MRCVS. Chipping Norton Veterinary Hospital, Albion Street, Chipping Norton, Oxon, OX7 5BN.)
Notes:
History : Nasal aspergillosis is relatively common in dogs but rare in cats. Our veterinary hospital in Oxfordshire was recently presented with a 13-year old female Burmilla cat with a history of left-side unilateral nasal discharge, a watery left eye with slight blepharospasm, occasional ‘twitching movements’ of the head, weight loss, inappetance and depression. Clinical examination was unremarkable except for left-side mucopurulent nasal discharge, left-side mild serous ocular discharge, and a soft subcutaneous swelling over the left frontal sinus. Haematology, blood biochemistry and urinalysis revealed diabetes mellitus but was otherwise unremarkable. Radiography under general anaesthesia revealed a diffuse soft tissue density within the left nasal cavity and left frontal sinus. Rhinoscopy revealed mucopurulent discharge on the left side but was otherwise unremarkable. Aspiration of the swelling over the left frontal sinus produced pus and this abscess was lanced and flushed. The frontal sinus was trephined and the sinus and nasal cavity flushed with saline. Tests for feline immunodeficiency virus and feline leukaemia virus and serology for Aspergillus were not carried out. The cat was started on insulin, ibafloxacin (Ibaflin, Intervet) and meloxicam (Metacam, Boehringer). Cytology of the material flushed from the frontal sinus and nasal cavity revealed fungal hyphae consistent with Aspergillus species and culture of this material yielded growth of a fungus which was morphologically similar to A. candidus (Awaiting molecular typing results). The cat was then started on oral itraconazole (Itrafungol, Janssen) 10 mg/kg p.o. SID. The abscess over the rostral frontal sinus did not heal and a second abscess appeared over the nasal bone just dorsal to the nose. Infusion of the frontal sinus and nasal cavity with topical antifungal medication was discussed with the owners, but as the cat was deteriorating they requested euthanasia. On post-mortem examination the right nasal cavity, frontal sinus and orbit were unaffected. The left nasal cavity and sinus were full of pus and debris and there was severe bone erosion from the nasal cavity into the rostromedial orbit through which pus was protruding. There was also severe bone erosion rostrally through the nasal bone and less severe bone erosion dorsally over the rostral part of the frontal sinus, these sites of bone erosion being at the location of the two subcutaneous abscesses.Feline nasal aspergillosis is extremely rare in the UK and to our knowledge this is the first reported case of orbital aspergillosis in the UK although nasal aspergillosis has been reported in other countries.
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5 sputum samples were positive for A. niger, a bronchoscopy was normal and culture and microscopy were negative. Rx voriconazole, 200mg bd was given. An excellent clinical response was seen.
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The patient was a 37-year old man in whom P.carinii pneumonia developed in August 1987, followed by esophageal candidiasis and upper gastrointestinal bleeding in September. Chronic perineal herpes led to the formation of rectourethral fistula and multiple episodes of urosepsis, for which he was given long-term ciprofloxacin therapy to suppress bacterial colonization of the bladder. He discontinued heavy alcohol use in September 1987 and smoked marijuana occasionally.On April 23 1989, the patient was admitted to the hospital with a two-month history of increasing dry cough with shortness of breath. He reported transient fever (temperature to 41°C). He was admitted with leukopenia, with his neutrophil count falling to 16 x 106/l on the second hospital day. A chest film showed bilateral fluffy lower-lobe infiltrates (this image). Zidovudine was discontinued. The patient had a rapidly downhill course despite intravenous treatment with trimethioprim-sulfamethoxazole. A bronchoscopy on the sixth hospital day revealed what appeared to be a foreign body in the left lower-lobe bronchus. It was removed, together with much necrotic, mucoid debris. On microscopic examination, the “foreign body” was necrotic, containing large numbers of hyphae and conidia in a manner typical of an aspegilloma or fungal cast. The culture grew A.fumigatus.
Clinical and radiologic improvement followed bronchoscopy, and itraconazole therapy was begun because of the concern about invasive aspergillosis in the setting of marked neutropenia. The patient tolerated the medication well at a dose of 200 mg twice daily, and the chest film became normal over the subsequent six weeks, after which itraconazole was discontinued. A sputum specimen cultured for fungus four weeks after the start of therapy was negative. After the initial improvement with itraconazole, the patient had recurrent urosepsis, associated with dehydration and marked confusion. Nine weeks after the discontinuation of itraconazole, he died of progressive dementia complicated by recurrent pneumonia and sepsis. There was no postmortem examination.
This patient was described (pt 11) and this chest radiograph reproduced in Denning DW, Follansbee S, Scolaro M, Norris S, Edelstein D, Stevens DA. Pulmonary Aspergillosis in the Acquired Immunodeficiency Syndrome. N Engl J Med 1991; 324: 654-662.
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Image A. This 25 year old woman was previously well and presented with a pneumonia of uncertain aetiology. She has infiltrates in right upper-lobe and left middle and lower zones. The diagnosis was later made of chronic invasive pulmonary aspergillosis by bronchoscopy . Subsequently she was diagnosed with adult-onset chronic granulomatous disease with neutrophil function assays.
Image B. CT scan of the thorax just below the carina, showing almost complete opacification of the right lung and marked nodular shadowing around the hilum of the left lung.
Image C. Progression of pulmonary infiltrates are seen seven weeks later, despite administration of amphotericin B.
Image D. CT scan of the thorax above the carina showing near complete opacification of the right lung and multiple discrete nodular shadows in the left lung.
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02/10/09 X -ray shows improvement in appearances from initial presentation with complete chest radiographic resolution by 07/11/2008
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Subacute IPA in rhematoid nodules of the lung. in a patient with rheumatoid arthritis. Histology sections stained with H&E
