Neck lump evaluation and pseudoaneurysm.

Pseudoaneurysm is the formation of a sac due to damage in the continuity of the arterial wall. Iatrogenic carotid artery aneurysm is a rare, life-threatening complication following fine needle aspiration (FNA). We are presenting here a case of pseudoaneurysm following FNA with a literature review.

Parathyroid fine needle aspiration with PTH washout: Can it lead to parathyroid cell seeding in primary hyperparathyroidism?

Although parathyroid fine-needle aspiration (P-FNA) with parathyroid hormone (PTH) washout is effective in detecting preoperative parathyroid lesions, it also presents risks such as fibrosis, hematoma, and, in rare cases, tumor seeding. This study aimed to investigate whether P-FNA with PTH washout leads to the seeding of parathyroid cells along the path of the needle. A retrospective analysis was conducted on patients undergoing minimally invasive parathyroidectomy guided by preoperative PTH washout. Permanent pathology reports, imaging data, and postoperative serum parathyroid hormone and calcium levels were assessed to determine the effectiveness and safety of the procedure. Complications following P-FNA with PTH washout were also reviewed using data from the patient registration system of Bulent Ecevit University. The procedure accurately localized parathyroid adenomas in 87 patients who underwent ultrasound-guided parathyroidectomy following preoperative P-FNA and PTH washout. Postoperatively, 75 patients showed normal parathyroid hormone and calcium levels. Two patients required secondary surgery for contralateral adenomas. Critically, there was no evidence of P-FNA with PTH washout-induced parathyromatosis or seeding during the follow-up. Effective adenoma localization is crucial for successful minimally invasive surgery of hyperparathyroidism. Our study indicates that combining preoperative P-FNAB with PTH washout and imaging enhances adenoma detection, especially when intraoperative PTH measurements are not available, thus improving surgical outcomes. Notably, we found no evidence of cell implantation after P-FNA, suggesting the safety and efficacy of this method for preventing parathyroid cell seeding.

Cytological findings of phosphaturic mesenchymal tumor: Report of a case with summary of prior published cases.

Phosphaturic mesenchymal tumor (PMT) is a rare neoplasm causing tumor-induced osteomalacia (TIO) and is characterized by secretion of FGF23, renal phosphate wasting and hypophosphataemia. It can be completely cured by resection and therefore its diagnosis is of utmost importance. Although the histology is well described, there is sparse literature on cytology of PMT and only three cases have been described so far. A 45-year-old lady presented with a non-tender mass in hard palate for 2 years from which fine-needle aspiration was done. The smears were paucicellular and showed bland spindle cells embedded in osteoid-like stromal matrix in a hemorrhagic background. Here we take the opportunity to describe the cytological findings of PMT along with its cytological differentials and a summary of prior published cases.

Spontaneous resolution of primary hyperparathyroidism post-biopsy-related neck haematoma.

Spontaneous or fine-needle aspiration (FNA)-induced remission of primary hyperparathyroidism (PHPT) is an extremely rare phenomenon with variable outcomes. We report a 75-year-old Male who initially presented with left ureteric calculi and was found to have PHPT. Imaging studies including ultrasound neck, parathyroid sestamibi scan and computed tomography of thorax, abdomen, and pelvis failed to identify the culprit lesion and exploratory parathyroidectomy was planned. Before surgery, he underwent FNA for cytology of a right cold thyroid nodule which was complicated with a large neck haematoma and dysphagia. The cytology of the aspirated fluid was consistent with a benign cyst. One month after the procedure, serum calcium and phosphate normalised along with resolution of haematoma. He remained in biochemical remission at 1-year follow-up with the latest ultrasound of neck showing resolution of a large colloid nodule that was previously seen occupying the right thyroid lobe.

Effect of needle gauge on pain and specimen quality of ultrasound-guided fine needle sampling without aspiration of the canine spleen.

Modifications of splenic parenchyma are common ultrasonographic findings in dogs. Splenic fine needle aspiration (FNA) is a rapid, safe procedure, routinely performed in veterinary institutions. However, 22-gauge (G) needle usually reported is selected according to general practice and the most appropriate needle size to be used remains unclear. The aim of this prospective, single-center, methods comparison study was to assess the effect of needle size on cytologic specimens' evaluation and animal welfare during the procedure. Dogs underwent ultrasound-guided splenic FNA using 23, 25, and 27G needles. Needles were compared based on initial and then detailed cytologic evaluation. The initial evaluation assessed overall cellularity, cell preservation, hemodilution, and detailed cytologic evaluation referred to exhaustive splenic components. Welfare evaluation was performed based on a scoring system. A total of 54 dogs were included in this study with 54 of 54 welfare evaluations and 35 of 54 cytologic evaluations by one or two European College of Veterinary Clinical Pathology-certified cytologists. The final cytologic diagnosis was unchanged regardless of the needle size. For the initial evaluation, 23G needles provided significantly higher cellularity than the 27G needles. For detailed cytologic evaluation, only the richness in mesothelial cells and stroma was affected by needle size. Pain induced by the procedures was considered low using 23, 25, and 27G needles with the 27G needle producing the least adverse reactions. Findings from the current study supported using needle gauges smaller than the previously published standard 22G needle for spleen ultrasound-guided fine needle nonaspiration in dogs. Due to higher cellularity and lower pain scores, authors recommend the use of 23G needles with a nonaspiration technique.

A Case of Diffuse Thyroid Hematoma after Ultrasound-Guided Fine Needle Aspiration.

Ultrasound-guided fine needle aspiration is an easy, safe, and efficient method of diagnosing thyroid diseases. Recent guidelines and studies have demonstrated that this test has a low incidence of complications; thus, most guidelines do not provide recommendations for post-exam care. However, the risk of serious and fatal bleeding in selected patients with bleeding tendency exists. Although screening tests for coagulation are not always necessary, a thorough assessment of past medical history needs to be made to identify disorders affecting coagulation function and bleeding risk factors, such as the use of antithrombotic drugs. This is a case report of a 70-year-old female patient who continued to take edoxaban and suffered bilateral thyroid hematoma a few hours after ultrasound-guided thyroid fine needle aspiration. The patient successfully recovered after undergoing conservative treatment.

Polymethylmethacrylate-induced foreign body reaction presenting as bilateral parotid lesions: A case report of dermal filler adverse reaction diagnosed on fine needle aspiration.

BACKGROUND: Dermal filler injections are being increasingly used as a non-surgical option for facial cosmetic procedures. However, their use has been implicated in multiple adverse events including immediate, early onset, and late onset complications. AIM: We present a case of dermal filler-induced foreign body reaction presenting as bilateral parotid lesions and diagnosed using fine needle aspiration. CONCLUSION: This case elucidate the risk of delayed adverse events in patients with dermal filler injections and stresses the importance of awareness by patients and providers for such events.

A Comprehensive Assessment of the Harms of Fine-Needle Aspiration Biopsy for Thyroid Nodules: A Systematic Review.

BACKGRUOUND: There have concerns related with the potential harms of fine-needle aspiration biopsy (FNAB). We aimed to summarize the clinical complications and evaluate the safety of FNAB. METHODS: Studies related with the harms of FNAB were searched on MEDLINE, Embase, Cochrane library, and KoreaMed from 2012 to 2022. Also, studies reviewed in the previous systematic reviews were evaluated. Included clinical complications were postprocedural pain, bleeding events, neurological symptoms, tracheal puncture, infections, post-FNAB thyrotoxicosis, and needle tract implantation of thyroid cancers. RESULTS: Twenty-three cohort studies were included in this review. Nine studies which were related with FNAB-related pain showed that most of the subjects had no or mild discomfort. The 0% to 6.4% of the patients had hematoma or hemorrhage after FNAB, according to 15 studies. Vasovagal reaction, vocal cord palsy, and tracheal puncture have rarely described in the included studies. Needle tract implantation of thyroid malignancies was described in three studies reporting 0.02% to 0.19% of the incidence rate. CONCLUSION: FNAB is considered to be a safe diagnostic procedure with rare complications, which are mainly minor events. Thorough assessement of the patients' medical condition when deciding to perform FNABs would be advisable to lower potential complications.

Diagnostic Yield of Transabdominal Ultrasound-Guided Core Needle Method in Biopsies of Pancreatic Lesions.

ABSTRACT: In this study, it was aimed to contribute to the selection of the method to perform pancreatic lesion biopsies.Data of patients, who had undergone a percutaneous biopsy because of pancreatic masses in our institution in the period between January 2015 and November 2019, were evaluated retrospectively. The percutaneous biopsy method, the type of needle used in the procedure, and periprocedural complications were listed. Pathology and cytology reports in the archive were reviewed, and biopsy results were divided into 3 groups as benign, malignant, and inadequate. Of 308 patients included in the study, the diagnostic accuracy was verified in 124 patients through the assessment of surgical outcomes, results of biopsies from metastatic lesions, or follow-up findings. The verified results were classified as true-positives and true-negatives.Of a total of 308 patients included in the study, 23 underwent a fine-needle aspiration biopsy (FNAB) and 285 underwent a core needle biopsy (CNB). No statistical differences were observed in sample acquisition success and complications between the groups.Of the lesions with a confirmed pathological diagnosis, 67.74% were malignant and 32.26% were benign. The diagnosis was correct in 107 of 112 CNB patients (95.54%) and 9 of 12 FNAB patients (75.00%). When the success of the 2 methods was compared, it was found that outcomes of CNB were statistically more successful compared with those of FNAB.A transabdominal ultrasound-guided percutaneous CNB is a safe method with a high diagnostic yield to perform a biopsy of the pancreas.

Adverse events unlikely after fine-needle aspiration biopsies of thyroid nodules in patients on low-dose aspirin: a prospective controlled systematic single center analysis.

AIM: Our aim was to test the assertion that in terms of rate or severity level, adverse events (AEs) after fine-needle aspiration biopsies (FNABs) of thyroid nodules are unfazed by daily low-dose (100 mg) aspirin (acetylsalicylic acid, ASA) intake. METHODS: We selected 268 patients for study, grouped as ASA-treated (PASA, n=78) or control (PCtrl, n=190) subjects. Controls received no antithrombotic medication. AE rates and severities were then analyzed based on patient- and nodule-related factors. We also compared group rates of non-diagnostic cytology results. RESULTS: AEs arising after FNABs (PASA, 5%; PCtrl, 8%) did not differ significantly by group in rate (p=0.4873) or severity level (p=0.3399). All were classifiable as minor incidents, none warranting any intervention. CONCLUSIONS: The data from the present study suggest, AEs after FNABs of thyroid nodules seldom occur and qualify as minor incidents. Such procedures may be safely conducted in patients taking daily low-dose ASA. There is no evidence to support preemptive therapeutic withdrawal.

Is the combined use of ultrasonography (USG) and fine needle aspiration biopsy (FNAB) safe in parotis masses? Retrospective comprehensive comparison of 123 cases.

OBJECTIVES: The purpose of the study was to compare final pathology results with ultrasonography (USI) and fine needle aspiration biopsy (FNAB) results in parotis masses. METHODS: A total of 123 patients with primary parotis mass who applied to our center between 2010 and 2020 were selected for the study. Among these, 100 patients with preoperative USI, preoperative FNAB, and postoperative final pathology were included in the study. USI, FNAB, pathology results, surgery types, and demographic characteristics of the patients were analyzed. RESULTS: According to the postoperative final pathology, preoperative USI sensitivity was found to be 100%, specificity was 55, positive predictive value was 84.31%, negative predictive value was 100%, and accuracy was 86.89%. Preoperative FNAB had a sensitivity of 85.7%, a specificity of 92.1%, a positive predictive value of 82.1%, a negative predictive value of 90.2%, and a diagnostic accuracy of 89.3%, according to the postoperative final pathology. CONCLUSION: Preoperative USI and preoperative FNAB are very valuable diagnostic tools in the evaluation of parotis lesions. When used together, they provide highly accurate and important data for the surgeon.

Horner Syndrome subsequent to ultrasound-guided cervical lymph node fine-needle aspiration - A case report and literature review.

Horner Syndrome (HS) is characterized by symptoms of ipsilateral miosis, ptosis, enophthalmos, and facial anhidrosis, which is caused by the damaged oculosympathetic pathway. HS is rarely reported as postoperative complications of fine-needle aspiration (FNA). We report a case of HS triggered by Ultrasound-guided FNA during thyroid cancer management and conducted the literature review. A 31-year-old male with differentiated thyroid cancer underwent total thyroidectomy and regional lymph node dissection as well as radioactive iodine ablation, presented with persistently elevated tumor marker of thyroglobulin and suspicious left level IV and V cervical lymph nodes by neck ultrasound. Ultrasound-guided left cervical lymph nodes FNA for cellular diagnosis was performed, and typical manifestations of HS appeared immediately after the procedure. Subsequent ultrasound evaluation of the same area demonstrated a subtle strip of the hypo-echogenic area in the superior pole of the suspected level IV structure, suggesting sympathetic ganglia with the visible originating nerve fiber on the superior pole. All of the patient's symptoms of HS were resolved 2 months after the incidence. Cervical sympathetic ganglia can be similar in size, shape, and ultrasound characteristics to a malignant lymph node. Thorough ultrasound examination by directly comparing the potential ganglia with a typical malignant lymph node, and paying attention to any potential root fibers on the target is key to avoiding ganglia injury before the neck invasive procedures.

A Rare Case of Fatal Thyroid Hemorrhage After Fine-Needle Aspiration: Case Report and Review of the Literature.

ABSTRACT: Sudden death due to massive hemorrhage after a mini-invasive ambulatory diagnostic procedure is extremely rare. Fine-needle aspiration (FNA) of thyroid nodules is very safe, displaying a low rate of complications, all of which mild and often self-limiting. In few cases do these complications necessitate surgical decompression, and rarely does FNA of a thyroid nodule lead to the death of the patient.We report a case of sudden death caused by respiratory insufficiency after compression of the vascular and nervous structures of the neck and obstruction of the upper airways by hemorrhages dissecting the thyroidal and perithyroidal tissues in a 78-year-old woman. These hemorrhages were the result of vascular lacerations caused during diagnostic FNA of a nodule suspected of malignancy. In such cases, it is important to conduct a complete autopsy and histological analysis to ascertain the origin of massive hemorrhage involving the structures of the neck and to attribute the cause of death to the aforementioned procedure. The forensic pathologist must bear in mind that even extremely small damage, such as that produced by a fine needle, may cause a fatal hemorrhage in subjects with a subverted anatomo-pathological picture (such as, for example, the massive fibrosis of an organ).

Cribriform - morular thyroid carcinoma: a rare entity.

We present a case report of a 51-year-old patient who underwent totalization of thyroidectomy - resection of the right thyroid lobe for growth progression of the largest nodule from which a fine needle aspiration biopsy (FNAB) was performed and was cytologically suspected of malignancy. Nodule was a graywhite colored tumor with a solid structure, histologically with an unusual morphology and immunoprofile, called cribriform morular thyroid carcinoma (CMTC). Usually, the tumor behaves indolently with a good prognosis. CMTC can be familial or sporadic, predominantly as a solitary or a multifocal lesion, often associated with autosomal dominant adenomatous polyposis syndrome (FAP), so it is necessary to point this out in the report. The syndrome of familial adenomatous polyposis was ruled out, the APC gene mutation was somatic.

Assessment of the risk of disease transmission during fine-needle aspiration cytology under ultrasound guidance by visualization of droplet and aerosol formation.

PURPOSE: Fine-needle aspiration cytology (FNAC) under ultrasound guidance is clinically useful, but there is a risk of spreading infection by generating droplets of contaminated fluids during the procedure. Risk assessment to better control infection remains to be established. The aim of this study was to estimate infection risks during FNAC by visualization of droplet production and deposition using a simulation model. METHODS: The simulation comprised a puncture needle, a device for holding the needle, and a fluid specimen containing fluorescent particles as a model. Simulating each step of FNAC (removal of the inner and outer cylinder and transferring the specimen onto a glass slide), the generation and deposition of droplets were visualized using a laser. RESULTS: After removal of the inner cylinder, an aerosol of droplets in the air surrounding the needle was observed. After removal of the outer cylinder, several large droplets precipitating onto the circumjacent surface were observed. From the beginning of transferring the specimen, a large amount of sizeable droplets first moving away and then precipitating was observed, followed by the production of a cluster of fine droplets drifting and spreading through the air. CONCLUSIONS: Here, the generation of droplets at each step of FNAC, precipitation of large droplets onto the circumjacent surface, and drifting and spreading through the air of fine droplets was visualized. These results emphasize the need for precautions to prevent the transmission of infectious agents during FNAC.

Acute transient thyroid swelling after fine-needle aspiration biopsy: A case report of a rare complication and a literature review.

Fine-needle aspiration biopsy (FNAB) is a safe and effective thyroid examination method with rare complications. Herein, we report a rare case of acute transient thyroid swelling that occurred after ultrasound-guided FNAB. The patient experienced acute pain with rapid thyroid swelling. Ultrasound imaging revealed a nodule with a linear, hypoechoic, and "patch-like" appearance, indicating edema without hemorrhage. After receiving anti-anaphylaxis and detumescence therapy for 1 day, the swelling regressed. Acute transient thyroid swelling is an extremely rare event that occurs shortly after FNAB and may frighten patients; therefore, clinicians should be aware of this complication in this context.