Case 1
Histiocytoma cutis (atypical fibroxanthoma) Special stains (not included): vimentin: positive keratin, CAM 5.2, HMB45, lysozyme, S-100: negative

---

Case 2
Mitotically active leiomyoma

---

Case 3
Moderately differentiated cloacogenic squamous carcinoma

---

Case 4
Pleomorphic leiomyosarcoma Special stains (not included): vimentin, actin, desmin: positive alpha-1-antitrypsin, alpha-1-antichymotrypsin: occasional large cell positivity HMB45, S-100: negative

---

Case 5
Low grade angiosarcoma (spindle cell hemangioendothelioma)

---

Case 6
Kaposi's sarcoma

---

Case 7
Clear cell sarcoma Special stains (not included): Fontana, S-100, HMB45, vimentin: positive keratin, mucicarmin: negative

---

Case 8
Benign congenital neuroblastoma

---

Case 9
Variant clear cell carcinoma, endometrium

---

Case 10
Infantile yolk sac tumor

---