Littre's Umbilical Hernia in a Child: A Case Report and Scoping Review.

Littre's umbilical hernia (UH) is a rare disease, the third most common Littre hernia. Most case reports interest adult patients. We reported the case of a four-year-old girl with anemia and symptomatic UH, with an incidentally diagnosed Meckel's diverticulum (MD) containing pancreatic ectopic tissue. We reviewed case reports on Littre's umbilical hernia without a date or language restriction. Including our patient, 21 cases were reviewed, of whom 15 (71.4%) were adults and 13 (61.9%) were males. Complicated umbilical hernia occurred in 13 patients (61.9%) and symptomatic MD in two children (9.5%). Investigations preoperatively diagnosed two patients (9.5%). Eighteen patients (85.7%) underwent open surgery, Meckel's diverticulum removal was performed in 18 patients (85.7%), and primary umbilical hernia repair was performed in 16 (76.2%). Ectopic tissue was present in four patients (19.1%), and long-term outcomes were excellent in all patients.

Diagnosis of Inverted Meckel's diverticulum by double-balloon enteroscopy: a case report.

Background: Meckel's diverticulum (MD) is the most common congenital defect of the gastrointestinal tract, occurring in about 1% to 2% of population. Most MD are rarely symptomatic, with presenting symptoms including diverticulitis, digestive tract hemorrhage and intestinal obstruction. The semblance of symptoms to enteritis and appendicitis makes preoperative diagnosis challenging. Current diagnosis of MD includes technetium-99m pertechnate scan, laparoscopic or intraoperative findings and examining surgical specimens. Here, we report that a double-balloon enteroscopy (DBE) improves the diagnosis accuracy of MD and presents high clinical application value. Case Description: A 12-year-old male patient was admitted to our hospital due to recurrent abdominal pain and black stools for more than half a year, recurrence for 2 days, accompanied by vomiting. The boy had anemic appearance, with periumbilical tenderness, and no mass was detected upon palpations. Past medical records revealed recurrent abdominal pain episodes thrice. Pre-surgery 99TcmO4-single-photon emission computed tomography/computed tomography (SPECT/CT) imaging was performed but did not reach the condition for diagnosis of MD. DBE was then performed and identified an upper ileum mass. After surgery, it was confirmed that the patient was an inverted MD, and the pathology showed gastric mucosa and pancreatic tissue. The patient recovered well after surgery and was discharged. Conclusions: DBE is not widely used in the diagnosis of MD, but its accuracy is higher than that of radionuclide scanning imaging. In addition, several advantages such as hemostasis treatment, direct detection and observation of the diverticulum, and demarcation of the site and scope of the lesion prior to surgery brings high clinical application value.

Appendiceal ganglioneuroma incidentally found during resection of recurrent rectal cancer: case report and review of the literature.

Ganglioneuromas (GN) are benign neuroblastic tumors that arise from neural crest cells. Since they present with nonspecific symptoms, diagnosis is often incidental. We are reporting a case of an adult appendiceal GN incidentally found during rectal cancer surgery. A 42-year-old male was diagnosed with recurrent rectal cancer after experiencing urinary difficulties and buttock pain. A multiple-stage pelvic exenteration was carried out after neoadjuvant chemotherapy and chemoradiation. Prophylactic appendectomy was done during the course of surgery, and pathology reported an appendix with GN at the distal tip. GN are often found incidentally and rarely cause appendicitis. Depending on their location and size, they might become symptomatic. While there is some controversy on whether surgery is the treatment of choice for all GN, diagnosis is rarely apparent preoperatively, and all appendiceal masses should be resected.

Bioinformatics Analysis Reveals Novel Differentially Expressed Genes Between Ectopic and Eutopic Endometrium in Women with Endometriosis.

Background: Endometriosis is one of the chronic and prevalent diseases among women. There is limited knowledge about its pathophysiology at the cellular and molecular levels, causing a lack of a definite cure for this disease. In this study, differentially expressed genes (DEGs) between ectopic and paired eutopic endometrium in women with endometriosis were analyzed through bioinformatics analysis for better understanding of the molecular pathogenesis of endometriosis. Methods: Gene expression data of ectopic and paired eutopic endometrium were taken from the Gene Expression Omnibus database. DEGs were screened by the Limma package in R with considering specific criteria. Then, the protein-protein interaction network was reconstructed between DEGs. The fast unfolding clustering algorithm was used to find sub-networks (modules). Finally, the three most relevant modules were selected and the functional and pathway enrichment analyses were performed for the selected modules. Results: A total of 380 DEGs (245 up-regulated and 135 down-regulated) were identified in the ectopic endometrium and compared with paired eutopic endometrium. The DEGs were predominantly enriched in an ensemble of genes encoding the extracellular matrix and associated proteins, metabolic pathways, cell adhesions and the innate immune system. Importantly, DPT, ASPN, CHRDL1, CSTA, HGD, MPZ, PED1A, and CLEC10A were identified as novel DEGs between the human ectopic tissue of endometrium and its paired eutopic endometrium. Conclusion: The results of this study can open up a new window to better understanding of the molecular pathogenesis of endometriosis and can be considered for designing new treatment modalities.

Pancreatic Heterotopia at the Gastroesophageal Junction: A Case Report and Review of the Literature.

Pancreatic heterotopia is characterized by the presence of pancreatic tissue in a location outside of its typical anatomical position. Symptoms of pancreatic heterotopia vary based on the location of the ectopic tissue. It is commonly asymptomatic and often diagnosed incidentally during routine endoscopy. Clinically significant pancreatic heterotopia is often secondary to inflammation, bleeding, obstruction, and malignant transformation. The most common location of heterotopic pancreas is within 5 cm of the pylorus usually on the greater curvature. Involvement of the gastroesophageal junction is extremely rare. In this report, we describe the case of a 57-year-old woman who was diagnosed with ectopic pancreatic tissue at the gastroesophageal junction by esophagogastroduodenoscopy after presenting with symptoms of dyspepsia.

Ectopic pancreatic acinar cell carcinoma in the thoracic cavity of F344 rat.

Ectopic pancreatic tissue can occasionally cause inflammation, hemorrhage, stenosis, and invagination, similar to normal pancreatic tissue; however, tumorigenesis is rare. This case report describes an ectopically observed pancreatic acinar cell carcinoma in the thoracic cavity of a female Fischer (F344/DuCrlCrlj) rat. Histopathologically, polygonal tumor cells with periodic acid-Schiff-positive cytoplasmic eosinophilic granules showed solid proliferation and infrequently formed acinus-like structures. Immunohistochemically, the tumor cells were positive for cytokeratin, trypsin, and human B-cell leukemia/lymphoma 10, which specifically reacted with pancreatic acinar cells, and negative for vimentin and human α-smooth muscle actin. Ectopic pancreas develops in the submucosa of the gastrointestinal tract; however, there are few reports of its development and neoplasia in the thoracic cavity. To the best of our knowledge, this is the first report of ectopic pancreatic acinar cell carcinoma in the thoracic cavity of a rat.

Ectopic pancreas, gastric, duodenal and colonic tissue in a case of persistent umbilical discharge: Report of two patients with review of literature.

One of the typical complaints in the pediatric population is umbilical discharge. Among the congenital causes, remnants of omphalomesenteric duct or patent urachus are often detected. On a few occasions, multiple types of ectopic tissue are present. We describe histopathologic findings of two cases reported recently at our center as pediatric umbilical lesions with associated ectopic tissue. Histopathology of the excised mass confirmed the patent omphalomesenteric duct with ectopic gastric, duodenal, and colonic mucosa and pancreatic tissue in two patients with the clinical presentation of umbilical discharge. There were no associated congenital anomalies in these patients. The presence of multiple ectopic gastrointestinal mucosa and pancreas in the umbilical mass is unusual. Herein, we report these cases because of its rarity, multiple ectopic tissues, and reviewing the literature of the reported cases of multiple ectopic tissues.

Ectopic Salivary Gland - A Possible Differential Diagnosis of a Branchial Cleft Cyst.

Background: Branchial cleft cysts or fistulae are common in pediatric surgical pathology and are cured by surgery. Lesions in this area may not show the classical features of a cyst or duct lined by squamous or respiratory epithelium and other differential diagnoses should be considered. Case report: A seven-year-old otherwise healthy boy presented with bilateral swelling of the lower neck and reported intermittent secretion of clear fluid on the right side. Excision of the right sided lesion revealed an ectopic salivary gland, the excision of the left showed only subtle fibrosis. Conclusion: Ectopic salivary glands may occur in the distribution of branchial cleft remnants. Clear fluid drainage (saliva) may be a clinical clue that these are not branchial cleft cremnants.

Ectopic thyroid in EBUS: experience from a quality assurance programme.

A diagnostic challenge is presented: Distinguishing ectopic thyroid tissue from metastatic well-differentiated follicular carcinoma in cytological material. Two cases of thyroid tissue in mediastinal lymph nodes were sampled by endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA). Later, the cases were presented in Labquality's nongynecological external quality scheme rounds in the years 2017, 2019, and 2020. The same case was presented two times, both in the 2017 and in the 2020 rounds. The results of the three rounds and the discussion of diagnostic pitfalls of ectopic thyroid tissue are presented. A total of 112 individual laboratories worldwide participated in the external quality assurance rounds with whole-slide scanned images and digital still images of alcohol-fixed Papanicolaou-stained cytospin specimens in the years 2017, 2019, and 2020. Fifty-three laboratories participated in both the 2017 (53 of 70, 75.71%) and the 2020 (53 of 85, 62.35%) rounds. The given Pap classes between rounds were compared. Twelve (12 of 53, 22.6%) of the laboratories gave the same Pap class value, whereas 32 (32 of 53, 60.4%) were in the range of ±1 class difference (Cohen's kappa -0.035, p < 0.637). When comparing the diagnoses, 21 (21 of 53, 39.6%) laboratories gave the same diagnosis in 2017 and in 2020 (Cohen's kappa 0.039, p < 0.625). Thirty-two of the laboratories gave the same diagnosis both in 2017 and in 2020 (Cohen's kappa 0.004, p < 0.979). Ten (10 of 53, 18.9%) laboratories changed their diagnose from malignant to benign, and 11 (11 of 53, 20.8%) changed their diagnose from benign to malignant between the 2017 and the 2020 rounds. In conclusions, the expert reference diagnosis was thyroid tissue in mediastinal lymph node. Thyroid tissue in mediastinal lymph node may be either of ectopic or of neoplastic origin. The diagnostic work-up should include cytomorphological, immunohistochemical, laboratory, and imaging results. If a neoplastic change is excluded, the benign category is the most feasible one. The quality assurance rounds showed a large variability in the given Pap classes. Mirroring the problematic issue both inter- and intralaboratory of such cases both in routine diagnostics and in the classification terminologies is requiring multidisciplinary evaluation approach in the diagnostics.

Not a neuroendocrine tumor: A case of hepatocellular carcinoma in ectopic liver tissue in the pancreas.

Hepatocellular carcinoma (HCC) accounts for most of the hepatic neoplasms and can also occur in ectopic liver tissue. We present a case of a 55-year-old male complaining of weight loss. The imaging studies reported a 2.9 cm nodule in the pancreatic body, with a neuroendocrine tumor diagnosis by cytology. A corpo-caudal pancreatectomy was performed. Pathology showed a well-differentiated HCC developed in ectopic liver tissue with free margins and no lymph node metastases. HCC presenting in ectopic liver tissue is rare. In this case, the preoperative study did not establish the diagnosis, warranting the need for suspicion of this neoplasm.

Adrenal Cortical Rests in the Fallopian Tube: A Case Report and Review of the Literature.

Ectopic adrenal rest is a rare phenomenon usually discovered incidentally during microscopic evaluation. The most common site reported in the literature is the genitourinary system and pelvis. Ectopic adrenal rest is more common in male than in female children. The documented site for females is mainly along the broad ligament. However, only two cases of ectopic adrenal rest in the fallopian tube have been reported in the literature, showing that they are extremely rare. In this article, we outline a case of adrenal cortical rest that was discovered incidentally during a microscopic examination of the left fallopian tube after a total hysterectomy with a left salpingo-oophorectomy specimen from a 49-year-old female patient who was complaining of severe bleeding related to severe adenomyosis.

Life-threatening gastrointestinal bleeding caused by jejunal heterotopic gastric mucosa in an adult dog: a rare case report.

BACKGROUND: Heterotopic gastric mucosa has been scarcely reported in the veterinary literature. Its presence can be asymptomatic or associated with various clinical signs ranging from apathy, vomiting, to abdominal pain. This report illustrates the presence of heterotopic gastric mucosa in the jejunum of an adult dog. It is the first to describe severe anemia, requiring acute blood transfusion, following intestinal hemorrhage caused by heterotopic gastric mucosa. CASE PRESENTATION: A twelve-year-old, intact male Maltese dog was presented with a history of apathy, vomiting and anemia. The dog was on a strict diet for recurrent diarrhea, food intolerance and skin allergy. Clinical examination revealed severe anemic mucous membranes and painful abdominal palpation. Blood examination confirmed severe regenerative anemia. Ultrasonography showed an intestinal neoplasm, gall bladder sludge and non-homogeneous liver parenchyma. Three-view thoracic radiographs failed to show any metastatic lesions or enlarged lymph nodes. After initial stabilization and blood transfusion, a midline exploratory laparotomy was performed. Three different masses were found in the jejunum. Resection and anastomosis of approximately 40 cm of jejunum was performed, followed by liver and lymph node biopsy and placement of an esophagostomy tube. Two days after surgery the dog started to clinically improve and was discharged from the hospital on the sixth day after surgery. Histopathology revealed the intestinal masses to be heterotopic gastric mucosa associated with intramural cystic distensions, multifocal ulceration and bleeding into the intestinal lumen. Two years after surgery, the dog did not have a recurrence of anemia or gastrointestinal signs. CONCLUSIONS: This case demonstrates that heterotopic gastric mucosa can be considered one of the differential diagnoses in case of severe anemia due to gastrointestinal hemorrhage and suspected intestinal tumors. Although in most described cases in literature the finding seems to be incidental on necropsy, our report shows that heterotopic gastric mucosa can be the etiology of life-threatening signs. In addition, because no recurrent diarrhea episodes occurred after surgical resection of the ectopic tissue, it is likely that the heterotopic gastric mucosa was the cause of the food intolerance signs in this dog.

Large cervical mass and head and neck cancer. First report of ectopic papillary adenoma of the lung.

AIM: We aim to report the first case of ectopic papillary adenoma of the lung (PAL), identified in the neck. METHODS: A 62-year-old woman with a known history of thyroid cancer treated several years ago, presented at our department because affected by an unpainful latero-cervical neck mass. The patient performed neck ultrasound echography, blood tests and computed tomography (CT) of head, neck and thorax to exclude the recurrence of the thyroid tumor or other unknown cancer of head and neck. RESULTS: Her CT with contrast identified a large mass in the left thyroid loggia, with well-defined margins without post-contrast enhancement; the mass laterally displaced the trachea, without reduction of airways caliber. The tumor was removed. The histologic analysis showed aspects typical of PAL. Because the mass was completely removed, and no lymph nodes were identified, additional treatments were excluded. CONCLUSIONS: Despite the ectopic tissue can be rarely identified in the neck, it should be always considered because it might degenerate and cause, as in our case, a tumor like PAL. The diagnostic plan is fundamental to well manage latero-cervical mass avoiding risks for patients.

Tiroides Ectópica Lingual: caso Clínico / Lingual Ectopic Thyroid: a clinical case

La tiroides ectópica lingual es una patología muy poco frecuente, producida por la detención en el descenso normal de la glándula durante el desarrollo embrio-nario. La localización lingual de tejido tiroideo es la más común entre las tiroides ectópicas o aberrantes. Esta enfermedad puede ser asintomática pero, cuan-do los signos y síntomas están presentes, guardan estrecha correlación con la localización de la lesión y son proporcionales a su tamaño. El diagnóstico debe realizarse clínicamente y con el complemento de es-tudios por imágenes y endocrinológicos. En los aná-lisis de laboratorio se debe incluir dosaje de las hor-monas TSH, T4 libre y T3, vinculadas con la función tiroidea. Las biopsias deben evitarse ya que causan desequilibrio en la producción hormonal de la glándu-la y peligro de profusas hemorragias. En este artículo se desarrolla una descripción de las generalidades de la tiroides ectópica lingual, y se presenta un caso clínico de un niño con un tumor lingual, que fue deri-vado por su médica pediatra a cirugía para realizar una biopsia. Asimismo, se comenta la importancia que tiene para el odontólogo conocer esta patología a fin de poder evitar sus posibles complicaciones (AU)

Lingual thyroid is a rare disorder produced by a failure in the descent of thyroid gland to its normal position during embryological development. Lingual localization of thyroid tissue is the most common among the ectopic or aberrant thyroids. This condition can be asymptomatic, although when symptoms take place, they are connected to the lesion location and depend on its size. Diagnosis should be made clinically and complemented with imaging and endocrine studies. Laboratory analysis must include dosage of TSH, free T4 and T3, thyroid function-linked hormones. Due to the possible imbalance in the gland hormone production and the risk of massive bleeding, biopsy should be avoided. In this article, a brief description of lingual ectopic thyroid generalities is developed and a clinical case of a 7-years old child is provided. Additionally, dentistry importance of knowing this condition is commented, in order to prevent its possible complications (AU)

Ectopic mammary tissue in vulva: case report and systematic literature review / Tejido mamario ectópico en vulva: reporte de caso y revisión sistemática de la literatura

Objective: To report the case of a patient diagnosed with ectopic mammary tissue in the vulva, and to conduct a literature review of the diagnosis, treatment and prognosis of this condition in that location. Materials and Methods: A 49-year-old patient who presented with a painful vulvar mass to a private intermediate complexity center in Bogotá, Colombia. The lesion was assessed on ultrasound and then surgically excised; histopathology showed ectopic mammary tissue with absence of malignancy. A search was conducted in the PubMed, Embase, Cochrane, LILACS and Scielo databases using the keywords "Vulva," "Breast" and "Ectopic." Case reports and case series of women with histopathology-confirmed mammary tissue in the vulva were included. Results: Overall, 184 titles were identified and, of these, 94 were ultimately included, for a total of 126 cases, with 57.9% being benign tumors, 95% in women under 50 years of age, and 42.06% being malignant tumors, 92% in women over 50 years of age. Diagnosis was made on the basis of the clinical findings, with ancillary diagnostic imaging, tumor markers and immunohistochemistry in some cases. Local excision was performed in 91% of cases with benign pathology and in 43% of cases with malignant pathology, with the diagnostic method being therapeutic. Conclusions: Ectopic mammary tissue in the vulva must be considered as part of the differential diagnosis of vulvar masses, prognosis being different in pre and postmenopausal women. Further studies are needed to enhance the characterization of this condition and define the ideal course of treatment in terms of relapse and survival.

Objetivo: reportar el caso de una paciente con diagnóstico de tejido mamario ectópico en vulva, y realizar una revisión de la literatura acerca del diagnóstico, tratamiento y pronóstico de esta condición en esta localización. Materiales y métodos: paciente de 49 años consulta por masa vulvar dolorosa a un centro privado de nivel medio de complejidad ubicado en Bogotá, Colombia. Se realizó ecografía de la lesión y posteriormente escisión quirúrgica; la histopatología mostró tejido mamario ectópico sin malignidad. Se realizó una búsqueda en las bases de datos PubMed, Embase, Cochrane, LILACS y Scielo, con las palabras clave "Vulva", "Glándulas mamarias", "ectópico", "Vulva", "Breast" y "Ectopic", y se incluyeron reportes y series de caso de mujeres con tejido mamario en vulva confirmado por histopatología. Resultados: se identificaron 184 títulos, de los cuales 94 fueron finalmente incluidos para un total de 126 casos. El 57,9% eran tumores benignos, con un 95% en mujeres menores de 50 años; y el 42,06% eran tumores malignos, el 92 % en mujeres mayores de 50 años. El diagnóstico se realizó por clínica, con imágenes diagnósticas complementarias, marcadores tumorales e inmunohistoquímica en algunos casos. Se realizó escisión local en el 91% de los casos de patología benigna y 43% de patología maligna, siendo el método diagnóstico y terapéutico. Conclusiones: el tejido mamario ectópico en vulva debe ser considerado como parte del diagnóstico diferencial de masas a nivel vulvar con diferente pronóstico en mujeres pre y posmenopáusicas. Se requieren más estudios para una mejor caracterización de la patología y definir el tratamiento ideal en términos de recaída y supervivencia.

Tejido mamario ectópico en vulva: reporte de caso y revisión sistemática de la literatura / Ectopic mammary tissue in vulva: case report and systematic literature review

Objetivo: reportar el caso de una paciente con diagnóstico de tejido mamario ectópico en vulva, y realizar una revisión de la literatura acerca del diagnóstico, tratamiento y pronóstico de esta condición en esta localización. Materiales y métodos: paciente de 49 años consulta por masa vulvar dolorosa a un centro privado de nivel medio de complejidad ubicado en Bogotá, Colombia. Se realizó ecografía de la lesión y posteriormente escisión quirúrgica; la histopatología mostró tejido mamario ectópico sin malignidad. Se realizó una búsqueda en las bases de datos PubMed, Embase, Cochrane, LILACS y Scielo, con las palabras clave "Vulva", "Glándulas mamarias", "ectópico", "Vulva", "Breast" y "Ectopic", y se incluyeron reportes y series de caso de mujeres con tejido mamario en vulva confirmado por histopatología. Resultados: se identificaron 184 títulos, de los cuales 94 fueron finalmente incluidos para un total de 126 casos. El 57,9% eran tumores benignos, con un 95% en mujeres menores de 50 años; y el 42,06% eran tumores malignos, el 92 % en mujeres mayores de 50 años. El diagnóstico se realizó por clínica, con imágenes diagnósticas complementarias, marcadores tumorales e inmunohistoquímica en algunos casos. Se realizó escisión local en el 91% de los casos de patología benigna y 43% de patología maligna, siendo el método diagnóstico y terapéutico. Conclusión: el tejido mamario ectópico en vulva debe ser considerado como parte del diagnóstico diferencial de masas a nivel vulvar con diferente pronóstico en mujeres pre y posmenopáusicas. Se requieren más estudios para una mejor caracterización de la patología y definir el tratamiento ideal en términos de recaída y supervivencia.

Objective: To report the case of a patient diagnosed with ectopic mammary tissue in the vulva, and to conduct a literature review of the diagnosis, treatment and prognosis of this condition in that location. Material and methods: A 49-year-old patient who presented with a painful vulvar mass to a private intermediate complexity center in Bogotá, Colombia. The lesion was assessed on ultrasound and then surgically excised; histopathology showed ectopic mammary tissue with absence of malignancy. A search was conducted in the PubMed, Embase, Cochrane, LILACS and Scielo databases using the keywords "Vulva," "Breast" and "Ectopic." Case reports and case series of women with histopathology-confirmed mammary tissue in the vulva were included. Results: Overall, 184 titles were identified and, of these, 94 were ultimately included, for a total of 126 cases, with 57.9% being benign tumors, 95% in women under 50 years of age, and 42.06% being malignant tumors, 92% in women over 50 years of age. Diagnosis was made on the basis of the clinical findings, with ancillary diagnostic imaging, tumor markers and immunohistochemistry in some cases. Local excision was performed in 91% of cases with benign pathology and in 43% of cases with malignant pathology, with the diagnostic method being therapeutic. Conclusion: Ectopic mammary tissue in the vulva must be considered as part of the differential diagnosis of vulvar masses, prognosis being different in pre and postmenopausal women. Further studies are needed to enhance the characterization of this condition and define the ideal course of treatment in terms of relapse and survival.

Symptomatic Solid Ectopic Cervical Thymus in a 2-Month-Old Infant: Case Report.

Ectopic cervical thymus (ECT) is a rare pediatric pathology usually with an asymptomatic course. In fewer cases, the patient may present with dyspnea, hoarseness, stridor, dysphagia and pain. The mass may present in cystic or solid forms. Solid forms are rare, constituting only 10% of all ECT cases and these are mostly symptomatic. We aimed to present the case of an infant with ECT in the submandibular region that led to shortness of breath. ECTs in the submandibular region are mostly solid and larger in size, and therefore, likely to result in compressive symptoms. In this case report, we tried to cover the important aspects of the diagnosis of ECT, its treatment, and discussed the results with a literature review. We additionally aimed to emphasize the importance of considering pediatric ECT in the differential diagnosis of pediatric neck mass as well as considering surgical excision to prevent serious consequences.

Usefulness of Hybrid Single-Photon Emission Computed Tomography/ Computed Tomography in a Case of Ectopic Thyroid Tissue in the Thyroglossal Duct Remnant.

Here, we report a case of a 54-year-old woman affected by thyrotoxicosis, with scintigraphic evidence of a diffuse hyperfunctioning goiter and a large ectopic thyroid tissue in the thyroglossal duct remnant. The latter was apparently more active than the two lobes at 99mTc-pertechnetate scintigraphy, mimicking a condition of preexisting increased sensitivity to thyroid-stimulating hormone stimulation. On the other hand, single-photon emission computed tomography/computed tomography has proven to be a very useful tool in demonstrating this activity to be similar to the thyroid lobes and in defining extension and anatomical relationships of the mass.