Manjrekar V*, Parulekar SV**, Fernandes G***, Shaikh S****.
(* Third Year Resident, *** Professor and Head, Department of Pathology, *** Associate Professor, **** Second Year Resident, Department of Pathology, Seth G S Medical College & KEM Hospital, Mumbai, India.)
Metaplastic papillary tumor of the fallopian tube is an extremely rare condition. It is a benign condition, without any reports of recurrence or malignancy. But its nuclear atypia and papillary architecture suggest a similarity to serous borderline ovarian tumors. There are only eleven cases reported in the world literature. We report the twelfth case.
Metaplastic papillary tumor (MPT) of the fallopian tube is an extremely rare condition. Though its behavior is as of a benign condition in that it does not show recurrence or metastases, it has some features resembling serous borderline ovarian tumors. There are eleven such cases reported so far. We report the twelfth case here, and discuss its etiology and management.
Microscopy showed bits of fallopian tubal structure with blood clot in the lumina. Plenty of chorionic villi were seen embedded in the blood clot. One of the fallopian tubal bits showed an intraluminal polypoidal mass composed of glands and papillae embedded in loose stroma. The glands and papillae were lined by columnar non ciliated cells with eosinophilic cytoplasm and round nuclei with bland nuclear features. Focal pseudostratification of the columnar epithelium was seen. A focus of mucinous metaplasia was also seen. No nuclear atypia, mitotic activity or necrosis was seen. A diagnosis of Papillary Metaplastic Tumor of the fallopian tube was made.
Figure 1. Intraoperative findings: Uterus (white arrow), right ovarian cyst (yellow arrow), right fallopian tube (hollow arrows).
Figure 2. Scanner view of cross section of fallopian tube showing an intraluminal polypoidal mass composed of glands embedded in stroma. Also seen is a focus of mucinous metaplasia. (H&E x 50)
Figure 3. High power view of intraluminal fallopian tubal mass highlighting the glandular architecture. (H&E x 100)
Figure 4. High power view showing glands lined by columnar epithelial lining. No cellular atypia seen. (H&E x 400)
Figure 5. High power magnification of the focus showing mucinous metaplasia. (H&E x 100)
Figure 6. Classic chorionic villi & blood clots also seen in the lumen of the fallopian tube. (H&E x 100)
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Manjrekar V, Parulekar SV, Fernandes G, Shaikh S. Metaplastic Papillary Tumor Of The Fallopian Tube. JPGO 2016. Volume 3 Number 6. Available from: http://www.jpgo.org/2016/07/metaplastic-papillary-tumor-of.html