References

 
1. Seff I, Berkowitz S. Carcinomatous degeneration of sebaceous cysts. Surg Gynecol Obstet 1916;23:469–73.
 
2. Caylor HD. Epitheliomas in sebaceous cysts. Ann Surg 1925;82:164–76.
 
3. Bishop EL. Epidermoid carcinoma in sebaceous cysts. Ann Surg 1931;93:109–12.
 
4. Peden JC. Carcinoma developing in sebaceous cysts. Ann Surg 1948;128:1136–47.
 
5. Collins DC. Carcinoma originating in sebaceous cysts. Can Med Assoc J 1936;35:370–72.
 
6. Lund HZ. Cysts of the skin. In: Atlas of Tumor Pathology. Washington, DC: Armed Forces Institute of Pathology, 1957:section 1, part 2, F2–138–145 and F2–246–247.
 
7. Welch JW. Carcinoma arising in sebaceous cysts. Ann Surg 1958;76:128–32.
 
8. Jones EW. Proliferating epidermoid cysts. Arch Dermatol 1966;94:11–19.   
 
9. Reed RJ, Lamar LM. Invasive hair matrix tumors of the scalp. Arch Dermatol 1966;94:310–16.   
 
10. Holmes EJ. Tumors of lower hair sheath: Common histogenesis of certain so-called "sebaceous cysts," acanthomas and "sebaceous carcinomas." Cancer 1968;21:234–48.   
 
11. Dabska M. Giant hair matrix tumor. Cancer 1971;3:701–06.
 
12. Brownstein MH, Arluk DJ. Proliferating tricholemmal cyst: A simulant of squamous cell carcinoma. Cancer 1981;48:1207–14.   
 
13. Connors RC, Ackerman AB. Histologic pseudomalignancies of the skin. Arch Dermatol 1976;112:1767–80.   
 
14. Connors RC, Ackerman AB. Pseudomalignancies. In: F Helm (ed.), Cancer Dermatology. Philadelphia: Lea & Febiger, 1979:285–310.
 
15. Janitz J, Wiedersberg H. Tricholemmal pilar tumors. Cancer 1980;45:1594–97.   
 
16. Ackerman AB, de Viragh PA, Chongchitnant N. Proliferating follicular cystic neoplasm. In: Neoplasms with Follicular Differentiation. Philadelphia: Lea & Febiger, 1993;553–72.
 
17. Amaral AL MP, Nascimento AG, Goellner JR. Proliferating pilar (tricholemmal) cyst: Report of two cases, one with carcinomatous transformation and one with distant metastases. Arch Pathol Lab Med 1984;108:808–10.
 
18. Arico M, La Rocca E, Noto G, et al. Proliferating tricholemmal tumour with lymph node metastases. Br J Dermatol 1989;121:793–97.   
 
19. Mones JM, Ackerman AB. Proliferating tricholemmal cyst is squamous-cell carcinoma. Dermatopathol:Pract & Conc 1998;4:295–310.
 
20. Ackerman AB, Reddy V, Soyer H-P. Neoplasms with Follicular Differentiation, 2nd ed. New York: Ardor Scribendi, Ltd., 2001.
 
21. Sau P, Graham JH, Helwig EB. Proliferating epithelial cysts: Clinicopathological analysis of 96 cases. J Cutan Pathol 1995;22:394–406.   
 
22. Mann B, Salm R, Azzopardi JG. Pilar tumor: A distinctive type of tricholemmoma. Diagn Histopathol 1982;5:157–67.   
 
23. Baptista AP, Silva LGE, Born MC. Proliferating tricholemmal cyst. J Cutan Pathol 1983;10:178–87.
 
24. Yoshikawa K, Nakanishi A. Proliferating tricholemmal cyst on the back. J Dermatol 1978;5:279–82.   
 
25. Laing V, Knipe RC, Flowers FP, et al. Proliferating tricholemmal tumor: Report of a case and review of the literature. J Dermatol Surg Oncol 1991;17:295–98.   
 
26. Munro JM, Hall PA, Thompson HH. Proliferating tricholemmal cyst occurring on the shin. J Cutan Pathol 1986;13:246–49.   
 
27. Yamaguchi J, Irimajiri T, Ohara K. Proliferating tricholemmal cyst arising in the arm of a young woman. Dermatology 1994;189:90–92.   
 
28. Hendricks DL, Liang MD, Borochovitz D, Miller T. A case of multiple pilar tumors and pilar cysts involving the scalp and back. Plast Reconstr Surg 1991;87:763–67.   
 
29. Casas JG, Woscoff A. Giant pilar tumor of the scalp. Arch Dermatol 1980;116:1395.   
 
30. Rahbari H, Mehregan AH. Development of proliferating tricholemmal cyst in organoid nevus. J Am Acad Dermatol 1986;14:123–26.   
 
31. Gordon CJ. Proliferating tricholemmal cyst in an organoid nevus. Cutis 1991;48:49–52.   
 
32. Noto G, Pravata G, Arico M. Proliferating tricholemmal cyst should always be considered as a low-grade carcinoma. Dermatology 1997;194:374–5.   
 
33. Mori O, Hachisuka H, Sasai Y. Proliferating tricholemmal cyst with spindle cell carcinoma. Am J Dermatopathol 1990;12:479–84.   
 
34. Park BS, Yang SG, Cho KH. Malignant proliferating tricholemmal tumor showing distant metastases. Am J Dermatopathol 1997;19:536–39.   
 
35. Takenaka H, Kishimoto S, Shibagaki R, et al. Recurrent malignant proliferating tricholemmal tumour: Local management with ethanol injection. Br J Dermatol 1998;139:726–29.   
 
36. Kim YC, Vandersteen DP, Park DP, Cinn YW. A case of giant proliferating tricholemmal tumor with malignant transformation. J Dermatol 2000;27:687–8.   
 
37. Saida T, Ohara K, Hori Y, Tsuchiya S. Development of a malignant proliferating tricholemmal cyst in a patient with multiple tricholemmal cysts. Dermatologica 1983;166:203–08.   
 
38. Batman PA, Evans HJR. Metastasizing pilar tumor of scalp. J Clin Pathol 1986;39:757–60.   
 
39. Weiss J, Heine M, Grimmel M, Jung EG. Malignant proliferating tricholemmal cyst. Am Acad Dermatol 1995;32:870–73.   
 
40. Dominguez Arranz M, Morandiera Garcia MJ, Arraiza A, et al. Tumor Triquilemal proliferante maligno: Estudio clinico, morfologico y ultraestructural. Rev Esp Oncologica 1984;31:611–21.   
 
41. Arao T, et al. Other malignant skin tumors. Tokyo: Gan To Kagaku Ryohosha 1985;12:1767–74.   
 
42. Waligora MJ, Chor PJ, Schneider TA, Schaefer GS. Malignant proliferating trichilemmal tumor: Report of a case arising in the setting of proliferating trichilemmal tumor. Eur J Dermatol 1993;3:279–81.
 
43. Kruse-Loser B, Kleinheinz J, Werkmeister R, et al. Gigantische proliferierende trichilemmalzyste der kopfhaut mit zentralem karzinom und lymphknotenmetastasierung. Mund Kiefer GeschtsChir 1998;2:216–19.
 
44. Riemann H, Kruse-Loser B, Schmid M, Metze D. Proliferiende trichilemmalzysten mit anteilen eines metastastierenden plattenepithelkarzinoms. Hautarzt 1999;50:42–46.   
 
45. Yoleri L, Baser NT, Kandiloglu AR. Malignant proliferating trichilemmal tumor arising in multiple trichilemmal cysts. Ann Plast Surg 1999;43:575–6.   
 
46. Fernandez SH. Malignant proliferating trichilemmal tumor: A case report. Malaysian J Pathol 1999;2:177–21.
 
47. Uchida N, Tsuzuki Y, Ando T, et al. Malignant proliferating trichilemmal tumor in the skin over the breast: A case report. Breast Cancer 2000;7:79–82.   
 
48. Kim HJ, Kim TS, Lee KH, et al. Proliferating trichilemmal tumors: CT and MR imaging findings in two cases, one with malignant transformation. AJNR Am J Neuroradiol 2001;22:180–83.   
 
49. Bae SB, Lee KK, Kim JS, et al. A case of malignant proliferating trichilemmoma of the scalp with multiple metastases. Korean J Int Med 2001;16:40–43.   
 
50. Sethi S, Singh UR. Proliferating trichilemmal cyst: Report of two cases, one benign and the other malignant. J Dermatol 2002;29:214–20.   
 
51. Warner TFCS. Proliferating pilar cyst with spindle cell component. J Cutan Pathol 1979;6:310–16.
 
52. Linton PC, Korson R, Swartz B. Malignant change in cysts of the skin. Ann Plast Surg 1986;16:253–56.   
 
53. Janitz J, Wiedersberg H. Proliferierende trichilemmale zysten: Eine mogliche vorstufe des pilartumors des behaarten kopfes. Pathologe 1987;8:217–20.   
 
54. Rutty GN, Richman PI, Laing JHE. Malignant change in trichilemmal cysts: A study of cell proliferation and DNA content. Histopathology 1992;21:465–68.   
 
55. Alvarez-Quinones M, Garijo MF, Fernandez F, Val-Bernal J. Malignant aneuploid spindle-cell transformation in a proliferating trichilemmal tumour. Acta Derm Venereol (Stockh) 1993;73:444–46.   
 
56. Alessi E, Zorzi F, Gianotti R, Parafioriti A. Malignant proliferating onycholemmal cyst. J Cutan Pathol 1994;21:183–88.   
 
57. Oh JE, Ahn C, Yang JS, et al. Malignant proliferating trichilemmal tumour in renal transplantation. Nephrol Dial Transplant 1997;12:2768–71.   
 
58. Herrero J, Monteagudo C, Ruiz A, Llombart-Bosch A. Malignant proliferating trichilemmal tumours: An histopathological and immunohistochemical study of three cases with DNA ploidy and morphometric evaluation. Histopathology 1998;33:542–46.   
 
59. Markal N, Kurtay A, Velidedeoglu H, Hucumenoglu S. Malignant transformation of a giant proliferating trichilemmal tumor of the scalp: Patient report and literature review. Ann Plast Surg 1998;41:314–16.   
 
60. Val-Bernal JF, Garijo MF, Fernandez F. Malignant proliferating trichilemmal tumor. Am J Dermatopathol 1998;20:433.   
 
61. Lopez-Rois F, Rodriguez-Peralto JL, Aguilar A, et al. Proliferating trichilemmal cyst with forcal invasion: Report of a case and a review of the literature. Am J Dermatopathol 2000;22:183–87.
 
62. Fernandez-Figueras MT, Casalots A, Puig L, et al. Proliferating trichilemmal tumour: p53 immunoreactivity in association with p27 Kip1 over-expression indicates a low-grade carcinoma profile. Histopathology 2001;38:454–57.   
 
63. Mathias ED, Honningford JB, Rodriguez HE, et al. Malignant proliferating trichilemmal tumor. Am J Clin Oncol 2001;24:351–53.
 
64. Plumb SJ, Stone MS. Proliferating trichilemmal tumor with a malignant spindle cell component. J Cutan Pathol 2002;29:506–09.   
 
65. Vogelbruch M, Rutten A, Bocking A, et al. Differentiation between malignant and benign follicular adnexal tumours of the skin by DNA image cytometry. Br J Dermatol 2002;146:238–43.   
 
66. Mehregan AH, Lee KC. Malignant proliferating tricholemmal tumors: Report of three cases. J Dermatol Surg Oncol 1987;13:1339–42.   
 
67. Jaworski R. Unusual proliferating tricholemmal cyst (letter). Am J Dermatopathol 1987;9:459–61.   
 
68. Jaworski R. Malignant tricholemmal cyst (letter). Am J Dermatopathol 1988;10:276–79.   
 
69. Sleater J, Beers B, Stefan M, et al. Proliferating tricholemmal cyst: Report of four cases, two with nondiploid DNA content and increased proliferation index. Am J Dermatopathol 1993;15:423–28.   
 
70. Hashimoto Y, Matsuo S, Iizuka H. A DNA-flow cytometric analysis of tricholemmal carcinoma, proliferating tricholemmal cyst and tricholemmal cyst. Acta Derm Venereol 1994;74:358–60.   
 
71. Takata M, Rehman I, Rees JL. A tricholemmal carcinoma arising from a proliferating tricholemmal cyst: the loss of the wild-type p53 is a critical event in malignant transformation. Hum Pathol 1998;29:193–95.   
 
72. Monteagudo C. A tricholemmal carcinoma arising from a proliferating tricholemmal cyst: A response. Hum Pathol 1999;30:247–8.