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Sabato 27 ottobre 2012 - Pacini Editore

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COmuNiCaziONi ORali<br />

agnostic challenge. As in the present case, a prominent smooth<br />

muscle component with only scattered tumor cells may be<br />

mistaken for a leiomyoma, even though an association between<br />

adenomatoid tumors and leiomyomas seem to be not uncommon.<br />

Moreover, adenomatoid tumors with a solid growth pattern or<br />

cords of cells may be mistaken for an infiltrating malignant epithelial<br />

or mesothelial neoplasm. A differential diagnosis with a<br />

signet ring cell adenocarcinoma should be considered when small<br />

cells with small vacuoles are observed. In conclusion, we underline<br />

the importance to investigate each gynaecological lesion with<br />

great attention, in the aim to avoid over or under treatment in such<br />

challenging cases.<br />

references<br />

1 Goddard MJ, Grant JW. Adenomatoid tomours; a mucin histochemical<br />

and immunohistochemical study. Histopathology 1992;20:57-71.<br />

2 Nogales FF, Isaac MA, Hardisson D, et al. Adenomatoid tumors of the<br />

uterus: an analysis of 60 cases. Int J Gynecol Pathol 2001;21:34-40.<br />

3 Quigley JC, Hart WR. Adenomatoid tumors of the uterus. Am J Clin<br />

Pathol 1981;76:6<strong>27</strong>-35.<br />

4 Young RH, Silva EG, Scully RE. Ovarian and juxtaovarian adenomatoid<br />

tumors: a report of six cases. Int J Gynecol Pathol 1991;10:364-<br />

72.<br />

5 Amre R, Constantino J, Lu S, et al. Pathologic quiz case: a 52-yearold<br />

woman with a uterine mass. Arch Pathol Lab Med 2005;129:77-8.<br />

6 Skinnider BF, Young RH. Infarcted adenomatoid tumor; a report of<br />

five cases of a facet of a benign neoplasm that may cause diagnostic<br />

difficulty. Am J Surg Pathol 2004;28:77-83.<br />

7 Epstein JI. Urologic disorders: Differential Diagnosis in Pathology.<br />

New York, NY: Igasku-Shoin 1992, pp. 173-4.<br />

8 Golden A, Ash JE. Adenomatoid tumors of the genital tract. Am J<br />

Pathol 1945;21:63-79.<br />

9 Tiltman AJ. Adenomatoid tumors of the uterus and adnexa. Histopathology<br />

1980;4:437-43.<br />

10 Hes O, Perez-Montiel P, Alvarado Cabrer I, et al. Thread-like bridging<br />

strands: a morphologic feature present in all adenomatoid tumors.<br />

Ann Diagn Pathol 2003;7:<strong>27</strong>3-7.<br />

11 Phillips V, McCluggage WG, Young RH. Oxyphilic adenomatoid<br />

tumor of the ovary: a case report with discussion of the differential<br />

diagnosis of ovarian tumors with vacuoles and related spaces. Int J<br />

Gynecol Pathol 2007;26:16-20.<br />

12 Irikoma M, Takahashi K, Kurioka H, et al. Uterine adenomatoid<br />

tumors confirmed by immunohistochemical staining. Arch Gynecol<br />

Obstet 2001;265:151-4.<br />

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tumor of the uterus. Int J Gynecol Pathol 1991;10:296-301.<br />

A new monoclonal antibody kit for detecting HPV<br />

E7 oncoprotein: could it be a suitable, specific<br />

biomarker for hpv infection in cervical biopsies?<br />

G. Crisman1 , A.R. Vitale2 , L. Sollima1 , S. Bonin3 , V. Ciuffetelli4 ,<br />

A. Dal Mas4 , S. Saltarelli4 , L. Muzzolini5 , P. Zago5 , P. Leocata1 1 Anatomia Patologica, Dipartimento di Scienze della Salute, Università<br />

dell’Aquila, L’Aquila, Italia; 2 U.O.C. Anatomia Patologica, P.O. “SS.<br />

Filippo e Nicola”, Avezzano (AQ), Italia; 3 Dip. Univ. Cl. di Scienze Mediche,<br />

Chirurgiche e della Salute, Università di Trieste, Trieste, Italia;<br />

4 U.O.C. Anatomia Patologica, Ospedale Civile “San Salvatore”, L’Aquila,<br />

Italia; 5 Adriacell SpA, Trieste, Italia<br />

Introduction. The association of human papilloma virus (HPV)<br />

infection and cervical intraepithelial neoplasia (CIN) is well<br />

recognized. High-risk human papillomavirus (HR-HPV) infection<br />

are responsible of the vast majority of CINs and cervical<br />

carcinomas (CC) whereas the low-risk HPV(LR-HPV) types are<br />

rarely found.<br />

The different oncogenic potential of HR-HPV and LR-HPV is<br />

due to the different interactions of two major viral oncoproteins,<br />

E6 and E7, with cellular regulatory proteins, p53 and pRb. Interaction<br />

of HPV E6 and E7 oncogenic proteins with key regulatory<br />

cellular proteins leads to up regulation of p16INK4a , a CDK<br />

inhibitor. The overexpression of p16INK4a represents nowadays an<br />

indirect immunohistochemical marker for HPV infection, even<br />

313<br />

Fig. 1. HpV E7 viral oncoprotein expression in CiN1 (a), CiN2 (B) and<br />

CiN3(C) lesions. the expression strongly correlates with the grade of<br />

ciN<br />

though p16 INK4a -negative CINs and CCs are described. Thus, a<br />

more specific biomarker for HPV infection is needed.<br />

We investigated the expression of a new immunohistochemical<br />

monoclonal antibody kit which detects high-risk E7 oncogenic<br />

proteins of the Alpha-Papillomavirus genus (species 5,6,7 and 9)<br />

and compared the results with the p16 INK4a expression in CINs.<br />

Material and methods. Retrospective analysis of 50 paraffinembedded<br />

samples of diagnostic biopsies and surgical materials<br />

was performed by immunohistochemistry using commercially<br />

Fig. 2. a 20-year old woman with a pap smear diagnosis of l-Sil.<br />

Histological features of the cervical biopsy revealed a CiN1 lesion (a),<br />

p16 negative (B), HpV E7 viral oncoprotein positive (C). pCR investigations<br />

confirmed the presence of HpV 31 dNa.

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