1. Others Tumors

2. Mature cystic teratoma of the ovary From: Stevens A. J Lowe J. Pathology. Mosby 1995 Fig. 11.1 Unilocular cyst: (a) the wall with implanted teeth; (b) cavity content (hair, sebaceous material, and keratin).

3. Mature cystic ovarian teratoma From cases of the Pathology Department - U.M.F. “Gr. T. Popa” Iasi Fig. 11.2 Cyst wall contains multiple mature tissues (respiratory epithelium, intestinal epithelium, fibrous tissue, neural tissue, muscular cells etc. The tissues are chaotically disposed and have no relation with the place where they develop.

4. Mature mixt teratoma of the testis From: Stevens A. J Lowe J. Pathology. Mosby 1995 Fig. 11.3 Mature mixt teratoma is a solid tumor with mycrocystic structure. Variety of somatic-type of tissues: fibrous, cartilage, etc

5. Mature mixt teratoma of the testis From cases of the Pathology Department - U.M.F. “Gr. T. Popa” Iasi Fig. 11.2. Collections of heterogeneous tissues: fibrous tissue, cartilage, microcystic spaces lined by respiratory epithelium. Fig. 11.4

6. Epidermal melanocytes From: Stevens A. J Lowe J. Pathology. Mosby 1995 Fig. 11.5 In the skin, the melanocytes are located in the epidermal basal layer; Normally, there is a ratio of about 1 melanocyte to 10 basal cells.

7. Nevi -From: Stevens A. J Lowe J. Pathology. Mosby 1995 Nevi are cutaneous benign melanocyte tumors. They have origin in the melanocytes from basal layer of epidermis. Types of nevi:  epidermal or jonctional  compound  dermal Fig. 11.6

8. Compound nevus From cases of the Pathology Department - U.M.F. “Gr. T. Popa” Iasi Fig. 11.7

9. Fig. 11.8 Fig. 11.7-8. Nests of nevus cells in epidermis and subjacent dermis. The nevus cells have uniform, round nuclei, without mitotic activity. By passing from epidermis toward dermis the nevus cells become smaller and elongated, phenomena called maturation.

10. Cutaneous malignant melanoma From: Stevens A. J Lowe J. Pathology. Mosby 1995 Fig. 11.9

11. Malignant melanoma-MM From cases of the Pathology Department - U.M.F. “Gr. T. Popa” Iasi Fig. 11.10 MM is composed from sheets of atypical, spindle melanocytes with elongated, hyperchromatic and pleomorphic nuclei with atypical mitoses. Stroma is reduced and contains melanophages (macrophages with melanic pigment).

12. Melanoma of eye globe From: Stevens A. J Lowe J. Pathology. Mosby 1995 Fig. 11.11 Tumour fills the globe. Orbital extension may occur in early stage due to spread along ciliary vessels with infiltration of the orbital tissue.

13. Melanoma lung metastasis MM metastases are black in color. Fig. 11.12