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. 2020 Jan-Feb;36(2):151-155.
doi: 10.12669/pjms.36.2.1123.

Non Invasive Follicular Thyroid Neoplasm with Papillary like nuclear features (NIFTP), A time for change in Pakistan

Sumerah Jabeen  1 , Saira Fatima  2 , Aisha Sheikh  3 , Najmul Islam  4
Affiliations

Non Invasive Follicular Thyroid Neoplasm with Papillary like nuclear features (NIFTP), A time for change in Pakistan

Sumerah Jabeen et al. Pak J Med Sci. 2020 Jan-Feb.

Abstract

Objective: To determine the cases of Noninvasive Follicular thyroid neoplasm with papillary like nuclear features (NIFTP) in Pakistani population retrospectively. Another objective was to determine their clinical and radiological outcomes with respect to local and systemic disease recurrence, reconfirming the benign course of this new nomenclature in Thyroid tumors by WHO in our population would encourage adopting the new conservative treatment approach in such patients.

Methods: This is a retrospective cohort study conducted at a tertiary care center in Karachi, Pakistan from 2007-2016. All follicular Variant papillary thyroid cancer (FVPTC) reported from a single institute had their histopathology slides reexamined for diagnosing NIFTP as per the new WHO criteria. These cases were then followed retrospectively from their diagnosis onset through their medical and electronic health record for any local or systemic disease recurrence.

Results: There were 199 cases of Papillary Thyroid cancer (PTC) which included 22 cases of FVPTC. Eleven cases fulfilled NIFTP criteria with tumor size ranging from 1.1cm to ≥ 5.5cm. All patients in the NIFTP group underwent total thyroidectomy. Nine patients (81.81%) received RAI131 therapy. Four (45%) patients had a median follow up of three to four years. There was no disease recurrence seen on both ultrasound and RAI scans of patients in the NIFTP group. Seven patients (87.5%) had normal surveillance thyroglobulin levels except one whereas three patients were lost to follow up. There was no disease recurrence seen both radiologically and biochemically in the NIFTP group.

Conclusion: Our study favors the low risk nature of NIFTP with no disease recurrence in the cases studied and encourages de-escalation of treatment.

Keywords: Noninvasive follicular thyroid neoplasm with papillary like nuclear features (NIFTP); Papillary thyroid cancer; Thyroid tumor.

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