Mucoepidermoid carcinoma (MEC) is an incredibly rare shape of carcinoma (CA) [1-7]. It most usually takes place in the salivary glandsbut has additionally been pronounced inside the breathing tract, esophagus, breast,pancreas, genitals, anus, lips, mandible and rarely inside the thyroid[1,2,4,6-8]. Origin of MEC is unknown but its concept to originatefrom strong cell nests coming from Ultimobranchial frame [1,2,4,7].However, some authors accept as true with it to be of salivary duct epithelialbeginning, making up three% - 9% of all salivary gland tumours and about30% of all malignant salivary gland tumours and additionally takes place in 60% -70% of tumours inside the parotid gland7,8,nine. In any case, it not often occursin the thyroid [1-3,7] MEC had been said very few times in literature howeverthe cytological homes of MEC seem to be steady in spite of the organ of origin5. Нe are basically gradual growing tumours but areacknowledged to reveal aggressive behavior in a few cases [1,2,4,5,7]. We wantto give a case of MEC that happened in a patient with lump