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Abstract
The term swelling in language means any raised curved shape on the surface of the body which appears as a result of injury or an illness. So, if a part of the body swells or if it is swell up it becomes larger and rounder than normal (Sinclair, 1999). A swelling may be considered clinically as neoplasm, cyst, hematoma, inflamed and distended synovial bursa, hernia or abscess (O’conner, 1983).
Tumor is described as a less precise but commonly used synonym which originally meant a swelling, but it is almost exclusively reserved for enlargement of neoplastic nature (Smith, Jones and Hunt, 1974).
Fluctuating swellings at the head and neck regions in farm animals are many and variable from abscesses (Bialy, 1972; Misk, Nigam and Rifat, 1985; Ahmed, Misk, Taha,Youssef, 1990; Youssef, 1993 and Youssef, Ali and Saleh, 1993); Haematomas (Nigm, Misk, and Rifat, 1984 and Bolbol, 1986); Dermoid cysts (Makady, Aly and Youssef 1986 and Misk, Ahmed, Ismail and Bayoumi, 1994); Tassel cysts (Ali, 1995); Salivary cysts ( Othman, Ismail and Obead, 1991); Branchial cysts (Clark, Kostolish and Mosier, 1989; Youssef, Makady and Ahmed, 1991 and Misk et al., 1994) and venous diverticulum (Misk, El-Guindy and Makady, 1984).
Clinical findings were sufficient for diagnosis of swellings in ruminants in most cases. Histopathological and laboratory examination were indicated in some other cases ( Bailey, 1972; Youssef, 1984 and Ahmed, 1988).
Bursitis, cysts, abscesses and skin tumors were prevalent surgical affections among fattening animals (Mohamed, 1988). Hematoma, neoplastic and non neoplastic skin tumors are prevalent. Non neoplastic skin tumors are classified into non-neoplastic non-inflammatory tumors and inflammatory tumors, like granuloma, callus pyoderma, interdigital cysts and subcutaneous abscess (Saraha, 1997).