presents as irregular hard mass measuring 2 to 3 cms in size
On cutting tumor produces grating sensation ( similar to cutting water chestnut) due to desmoplastic stroma and foci of calcifications
Larger tumors invade skin producing ulceration or may be fixed due to infiltration of underlying pectoralis muscle
Retraction of nipple develops if the tumor is located in central portion
Involvement of dermal lymphatics produces Peud’ orange appearance of skin
Lobular carcinoma presents as hard irregular masses
Medullary carcinoma presents as well circumscribed tumor with pushing borders and soft in consistency (medulla means marrow in Latin) due to minimal desmoplasia
Mucinous carcinoma are soft and rubbery in consistency. Cut section has pale gelatinous appearance.
References
Vinay kumar, Abul K.Abbas, Nelson Fausto, Jon C. Aster. The Breast. In: Robbins and Cotran Pathologic basis of disease. 8th edition.