RESUMEN
Patients diagnosed with Lingual thyroid (LT) may have second thyroid anomaly (STA).Given rarity of dual ectopics/anomalies, standardized management recommendations are lacking. We aimed to describe our experience in management of LT with STA and suggest a management algorithm. We conducted a retrospectivechart review of patients diagnosed with LT between Jul-2013 and Dec-2019. Data regarding demographics, clinical presentation, endocrine-profile, associated STA treatment received, and outcomes were collected and analyzed. Eight patients (female-7 cases, male-1 case, adult-4 cases, children-4 cases, mean age-18.1 years, range 6-43 years) with LT were identified. Four(50%) cases had STA in addition to LT (thyroglossal cyst in two-cases, sublingual thyroid in one-case and sub-mental thyroid in one-case) and presented as neck mass. Diagnosis was confirmed with flexible-nasopharyngoscopy,ultrasonography,thyroid-scintigraphy and computed-tomography. Ectopic thyroid(s) was/were only functional thyroid gland with absence of normal thyroid in all cases. Two- cases had symptomatic for LT and were managed by coblation assisted excision of LT in one and I131 ablation in one-case.All adult patients were hypothyroidand received thyroxin.All pediatric cases were euthyroidand received no surgical intervention for LT.Three patients required surgery for STA; Sistrunk surgery in two and excision of submental thyroid in one. All cases were asymptomatic. These results were utilized to suggest a management algorithm for LT with STA. LT patients with STA are more symptomatic and required more surgical interventions in compare to isolated LT. When appropriate, excision of STA with/without intervention for LT and thyroxin is advocated as the treatment modality of choice in LT patients with STA.
RESUMEN
(1) To determine prevalence of malignancy in contralateral lobe (CL) in patients undergoing completion thyroidectomy (CT) and to study complications of CT. (2) To analyze clinical, ultrasonography(USG) findings and histopathological features of the tumor in ipsilateral lobe (IL) that could predict malignancy in CL. Retrospective chart review of 40-patients who first underwent hemi-thyroidectomy for fine-needle-aspiration (FNA) diagnosed benign lesions followed by CT between September-2017 and November-2019. Histopathology reports from both surgeries, along with patient characteristics and USGfeatures of initial hemi-thyroid lobe were reviewed. Thirty-two (80%) of the 40 patients were female. Mean age of presentation was 38.2 years (Range = 19-61years). Malignancy was found in 22(55%) contralateral-lobes of 40 completion thyroidectomies performed. Multi-focality of tumor in first surgery was only factor with significant association with presence of malignancy in CL (OR = 5.53, 95% CI 1.01-30.35, p = 0.048).In terms of USG-findings, most common suspicious feature in IL was peripheral/rim calcification, with TIRADS ≥ 4 was present in 19 patients but none of features could significantly predict bilateral disease. Three (7.5%) patients developed permanent unilateral recurrent-laryngeal-nerve (RLN) palsy (2-following initial surgery and 1-following CT). Fourteen (35%) patients developed hypoparathyroidism following CT of whom 12 were symptomatic and 4(10%) proceeded to permanent hypoparathyroidism. There were no other major complication following CT. Multifocality in initial hemithyroidectomy specimen was most frequently associated with malignancy in CL. Preoperative TIRADS ≥ 4 of IL may be considered a risk factor for bilateral malignancy. CT may be performed in FNA misdiagnosed thyroid cancers as there is high prevalence(56%) of disease in CL. CT is safe and it eradicates disease in CL.
RESUMEN
To analyse the pattern of laryngotracheal invasion (LTI) by papillary-thyroid-carcinoma (PTC) and outcomes of their management. We undertook a retrospective chart review to study patterns of LTI by PTC and to evaluate outcomes of surgical modalities used to treat PTC with LTI. Out of 246cases of PTC, 26-cases had LTI (male-12, female-14, mean-age-55.6 years, range 42-73 years). Common clinical presentation were neck swelling, respiratory distress/stridor and vocal cord paralysis in 100%, 8 (30.8%) and 10 (38.5%) cases respectively. PTC was staged according to AJCC-TNM staging system (T4a-24, T4b-02, N1a-12, N1b-14, M0-25, and M1-01). CT-scan showed obvious LTI and tracheal narrowing in 11(42.3%) and 18(69.2%) cases respectively. All cases underwent total thyroidectomy with central-compartment-clearance. Unilateral and bilateral lateral-neck-dissection was performed in 08 and 06cases respectively. Pattern of Intra-operative LTI were as follows: trachea-13cases, trachea and cricoid-05cases, thyroid cartilage-6cases, trachea, cricoid and thyroid cartilage-2 cases and intra-luminal involvement in 4cases. Modified Shin's staging was used to stage LTI. LTI were superficial, deep-extra-luminal and intra-luminal in 13, 09 and 04cases respectively. LTI was managed by shave-excision, window-resection of trachea, sleeve-resection of trachea and anastomosis, partial laryngectomy and total-laryngectomy in 13,02,04,05 and 2 cases respectively. All patients received radio-active-iodine (RAI) and TSH-suppression-therapy post-operatively. Mean follow-up period was two-years (range 18-30 months). One-case had radio-iodine non-avid local recurrence with lung metastases one-year post-operatively. Shave-excision is adequate for tumours not infiltrating into outer perichondrium. Tracheal-resection and total/partial laryngectomy may be required in cases with laryngo-tracheal cartilage or intra-luminal involvement. Adequate surgical excision along with postoperative RAI and TSH-suppression-therapy gives good loco-regional disease control in PTC with LTI.