doi:10.5455/vetworld.2013.223-225 Chondroma in an Indian ring neck parrot (Psittacula krameri manillensis): A case report

Introduction electrocautery. The surgical incision was closed as per standard technique. The weight of the tumour mass was Chondroma is a benign neoplasm arising from the 75g with radius of 2cm. Post-operatively, a broad cartilaginous tissue [1]. This term is also used to spectrum antibiotic (Cephalosporin @50mg/kg) was describe any benign proliferation of the cartilage, such administered intramuscularly (breast muscle) for 5 as extra skeleton chondroma from mixed tumours of days. Daily dressing of the surgical wound was done mammary gland of dog, synovial and bursal chondrowith antiseptic ointment (Himax, IH). The bird recovered ma, osteochondroma, ecchondroma and many non uneventfully within two weeks. There was no recurrclassified bone chondromas [2, 3]. There are very few ence of the growth in a follow-up period of three months. reports of neoplastic cases including chondroma in 3 Tumour was cut in to 1 cm pieces, fixed in 10% wild birds [4]. The present communication placed on formalin solution and processed for histopathological record a rare case of the chondroma affecting the right examination following the standard procedure [5]. metacarpal of an Indian ring neck parrot and its Thereafter, the tissue was processed using the routine successful surgical management. The gross and histotechnique and 4-5μ thick tissue sections were stained pathological studies were carried out to ascertain the by H & E staining method. Histopathological analysis pathogenesis and type of neoplastic growth. revealed a non capsulated neo-plastic tissue of Case history mesenchymal origin formed by chrondro-blasts and chrondocytes. It was surrounded by connective tissues A young Indian ring neck parrot, weighing 400 g (Fig. 2). Cellular pleomorphism was not very evident. was presented to the Teaching Veterinary Clinical Chrondrocytes were well differentiated with prominent Complex, College of Veterinary Science and Animal nuclei and nucleoli (Fig.3). No mitosis of the cells Husbandry, Bhubaneswar, with the complaint of could be identified. Inflammatory infiltration consisted tumour like growth in the right wing. The bird was of mononuclear cells and heterophils surrounding being kept under captivity by a resident of Bhubaneswar. cartilaginous neoplastic cells (Fig.4). Interstitial haeFurther anamnesis revealed a tumour like growth over the right metacarpal region of the wing (Fig.1). It was morrhage was also observed. (Fig. 5). firm, roughly circular and the covering skin was rough Discussion and uneven probably due to atrophy. Symptoms were Usually, Chondromas grow slowly and the clinical inability to fly, progressive weakness with partial signs are associated with the size and localization of the anorexia demanding surgical intervention. The tumour neoplasm. Grossly, chondromas are variable in size, mass was excised with local anaesthesia and was kept firm and surrounded by a fibrous capsule displaying a in 10% formal saline for further histological analysis. whitish discolouration, which is also evident in this Clinical examination and treatment study. Chondromas are distinguished from chondroThe bird was not co-operative for detailed clinical sarcomas or malignant form by lack of local invasiveobservation and pre-operative preparation. So it was ness, more orderly arrangement of cartilage cells and properly restrained before surgery. The operation site closer resemblance to normal mature cartilage [6]. These was prepared for surgical intervention by taking all the findings are completely in accordance with our record. aseptic precautions. Local infiltration of 2% The surrounding skin showed atrophy, ulceration and Lignocaine HCl (Wocaine 2%, Wockhardt, India) suppurative exudation due to extensive growth. In a around the tumour mass was done to achieve the local similar work, a non capsulated neoplastic tissue of anaesthesia. An elliptical incision was made all around mesenchymal origin formed by chrondroblasts and the base of the growth. The growth was completely chrondocytes and surrounded by connective tissues removed and the haemostasis was achieved by with or without cellular pleomorphism, well differentiated


Introduction
electrocautery.The surgical incision was closed as per standard technique.The weight of the tumour mass was Chondroma is a benign neoplasm arising from the 75g with radius of 2cm.Post-operatively, a broad cartilaginous tissue [1].This term is also used to spectrum antibiotic (Cephalosporin @50mg/kg) was describe any benign proliferation of the cartilage, such administered intramuscularly (breast muscle) for 5 as extra skeleton chondroma from mixed tumours of days.Daily dressing of the surgical wound was done mammary gland of dog, synovial and bursal chondrowith antiseptic ointment (Himax, IH).The bird recovered ma, osteochondroma, ecchondroma and many non uneventfully within two weeks.There was no recurrclassified bone chondromas [2,3].There are very few ence of the growth in a follow-up period of three months.reports of neoplastic cases including chondroma in 3 Tumour was cut in to 1 cm pieces, fixed in 10% wild birds [4].The present communication placed on formalin solution and processed for histopathological record a rare case of the chondroma affecting the right examination following the standard procedure [5].metacarpal of an Indian ring neck parrot and its Thereafter, the tissue was processed using the routine successful surgical management.The gross and histotechnique and 4-5µ thick tissue sections were stained pathological studies were carried out to ascertain the by H & E staining method.Histopathological analysis pathogenesis and type of neoplastic growth.revealed a non capsulated neo-plastic tissue of

Case history
mesenchymal origin formed by chrondro-blasts and chrondocytes.It was surrounded by connective tissues A young Indian ring neck parrot, weighing 400 g (Fig. 2).Cellular pleomorphism was not very evident.was presented to the Teaching Veterinary Clinical Chrondrocytes were well differentiated with prominent Complex, College of Veterinary Science and Animal nuclei and nucleoli (Fig. 3).No mitosis of the cells Husbandry, Bhubaneswar, with the complaint of could be identified.Inflammatory infiltration consisted tumour like growth in the right wing.The bird was of mononuclear cells and heterophils surrounding being kept under captivity by a resident of Bhubaneswar.cartilaginous neoplastic cells (Fig. 4).Interstitial hae-Further anamnesis revealed a tumour like growth over the right metacarpal region of the wing (Fig. 1).It was morrhage was also observed.(Fig. 5).firm, roughly circular and the covering skin was rough Discussion and uneven probably due to atrophy.Symptoms were Usually, Chondromas grow slowly and the clinical inability to fly, progressive weakness with partial signs are associated with the size and localization of the anorexia demanding surgical intervention.The tumour neoplasm.Grossly, chondromas are variable in size, mass was excised with local anaesthesia and was kept firm and surrounded by a fibrous capsule displaying a in 10% formal saline for further histological analysis.whitish discolouration, which is also evident in this Clinical examination and treatment study.Chondromas are distinguished from chondro-The bird was not co-operative for detailed clinical sarcomas or malignant form by lack of local invasiveobservation and pre-operative preparation.So it was ness, more orderly arrangement of cartilage cells and properly restrained before surgery.The operation site closer resemblance to normal mature cartilage [6].These was prepared for surgical intervention by taking all the findings are completely in accordance with our record.aseptic precautions.Local infiltration of 2% The surrounding skin showed atrophy, ulceration and Lignocaine HCl (Wocaine 2%, Wockhardt, India) suppurative exudation due to extensive growth.In a around the tumour mass was done to achieve the local similar work, a non capsulated neoplastic tissue of anaesthesia.An elliptical incision was made all around mesenchymal origin formed by chrondroblasts and the base of the growth.The growth was completely chrondocytes and surrounded by connective tissues removed and the haemostasis was achieved by with or without cellular pleomorphism, well differentiated chrondrocytes having well defined nuclei, nucleoli, no horned owl (Bubo virginianus) with bilateral swelling mitotic changes of the cells was reported [7].These of the scapulohumeral joint characterized by the Histologic characters have shown the remarkable formation of multiple, benign cartilaginous nodules in similarities with our findings.The histological examithe synovium [9].In humans, most cases of chondronation revealed that the mass was divided into lobules matosis involve the knee, joints of the shoulder, carpal by a thin fibrous stroma.The neoplastic cells were and tarsal bones, ankle and mandible [10].Forrester uniform in shape and size, and they were composed of and Spalding described multiple cutaneous chondromas well-differentiated mature chrondrocytes with poorly and chondrosarcomas on the legs of free-flying vascularized areas [8].These findings are in complete Sandhill (Grus canadensis) and Whooping Cranes accordance with our results.
(Grus americana) [11].Unlike wild birds, chondroma Differences between chondroma and malignant has been frequently reported in domestic animals.In a cartilaginous neoplasm are not always clearly recent study, a chondroma of the vertical ramus of the identified; there are some transitional tumours and mandible in feline species was reported [12].Similar to neoplastic processes believed to be benign might our study no reoccurrence was observed after surgery.acquire malignant characteristics.However, our In another report, Mohammed described benign investigation revealed only benign form of chondroma cartilaginous tumor in a 3.5 year-old ewe [13].Contoured and the tumour mass was limited to the radius ulna and borders were covered by fibrous tissue capsule as metacarpal region.In an incidence study, 13 mesenobserved in the present study [13].chymal tumours on the plantar aspects of the foot-pads Chondromas have already been frequently reported of Anseriformes and wild Mallards were reported [4].
in domestic animals.However, neoplasms arising from The larger nodules had superficial ulcerations and the cartilage are very rare in wild birds.Here we report haemorrhage.Single nodular chondromas were found an infrequent case of chondroma in an Indian Ring Neck on the proximal humerus of a pacific gull and attached Parrot (Psittacula krameri manillensis) and its gross and to the cranium of three canaries [4].
histologic lesions were well supported by different In a similar study, Howard and co-workers (1996) workers.To the best of our knowledge, this is probably reported a case of synovial chondromatosis in a great the first clinical and pathological description of