UNASSIGNED: The esophagus and duodenum are rare sites of manifestation for extrapulmonary tuberculosis (TB). Its rarity makes the diagnosis challenging, especially when no other organ is involved, and the endoscopic findings may resemble malignancy.
UNASSIGNED: We report a unique case of a 37-year-old woman who presented with dysphagia secondary to esophageal TB with an endoscopic appearance of a submucosal mass resembling malignancy.
UNASSIGNED: Esophageal TB is a rare cause of dysphagia, especially in a western setting. It should always be considered as a potential etiology in patients with dysphagia.

UNASSIGNED: This pilot study aimed to evaluate safety and tissue sampling from subepithelial lesions (SEL) in the upper gastrointestinal tract with a novel electric motor driven endoscopic ultrasonography (EUS)-guided 17-gauge (G) size core needle biopsy (CNB) instrument.
UNASSIGNED: An investigator-led prospective open label, performance and safety control study, including seven patients (female n = 4, median 71 y, range 28-75) with a determined SEL (median size 30 mm, range 17-150 mm) in the upper digestive tract (stomach n = 6, duodenum n = 1) were eligible and later followed up 14 days after index procedure. All investigations were completed according to protocol with three FNB 22-G passes with four fanning strokes and two EndoDrill® 17-G passes with three fanning strokes.
UNASSIGNED: Quality of samples as \'visible pieces\' (>5 mm): FNB (n = 5/7) (fragmented/blood imbibed n = 1, poor tissue quantity n = 1) compared with 17-G CNB (n = 7/7). Histological result which led to final diagnosis (leiomyoma n = 2, adenocarcinoma n = 1, schwannoma n = 1, neuroendocrine tumour n = 1, desmoid tumour n = 1 and gastrointestinal stromal tumour (GIST) n = 1) could be obtained with the 17-G CNB instrument in all seven patients. FNB technique reached correct diagnosis in six patients. No serious adverse event were recorded.
UNASSIGNED: By using an electric driven 17-G biopsy device, a true cylinder of core tissue can be obtained in one single puncture from the area of interest reducing the need for a second sampling. The absolute benefit of EUS-guided CNB is that the sample can be handled and histologically prepared in the same manner as standard percutaneous core needle sample, e.g., breast and prostate cancer.

BACKGROUND: Primary hematologic malignancies of the larynx are rare diagnoses, accounting for less than 1% of all laryngeal tumors. They most commonly present as submucosal masses of the supraglottis, with symptoms including hoarseness, dysphagia, dyspnea and rarely cervical lymphadenopathy.
OBJECTIVE: METHODS: Retrospective case series of patients in a tertiary academic laryngeal practice with hematologic malignancy of the larynx presenting over a 10 year period; charts were reviewed for diagnosis, symptoms, treatment, and outcomes.
RESULTS: 12 patients were found to have primary presentation of a hematologic malignancy within the larynx between 2009 and 2019. A submucosal mass was the most common finding, and hoarseness was the most common symptom. Local control of disease was high. Airway obstruction was managed with tracheostomy. Several patients required tube feeding prior to disease control. Most patients underwent radiation therapy and chemotherapy, although surgery alone was effective in patients with isolated disease.
CONCLUSIONS: Hematologic malignancies of the larynx are rare but treatable. Biopsy is the mainstay of diagnosis, and imaging may be helpful to exclude diseases with a similar physical presentation (i.e., laryngocele). Prognosis depends on diagnosis but is generally favorable.

UNASSIGNED: The role of cyst cytology to diagnose mediastinal duplication cysts remains controversial. Since endoscopic ultrasound (EUS)-guided fine needle aspiration (FNA) of duplication cysts has been considered as safe so far, there are only a few case reports of infections following FNA.
UNASSIGNED: We report a case series of all patients at our institution undergoing EUS evaluation for suspected mediastinal duplication cysts (n = 5) in the last 15 years. The mediastinal lesion in 4 patients did not feature typical EUS features for duplication cysts, wherefore we did perform EUS-guided FNA in order to rule out malignancy. In 3 out of 4 patients, a duplication cyst was confirmed. The fourth lesion turned out to be a sarcoma. All 4 patients developed severe FNA-induced cyst infection causing mediastinitis and the need for surgical debridement. Despite an immediate review of the FNA by the on-site cytopathologist with establishing the diagnosis of a duplication cyst, peri-interventional broad-spectrum antibiotics could not prevent severe infections of the lesions.
UNASSIGNED: Given the potentially high rate of infectious complications, we advocate a very restrictive indication for diagnostic FNA in mediastinal masses. Yet, in unclear cases, FNA might be indispensable despite the potential adverse events in order to rule out hypoechogenic, mediastinal malignancy.

UNASSIGNED: A new 20-gauge (G) biopsy needle with a core-trap technology has been developed with a large core size and enhanced flexibility. The aim of this multicenter study was to determine the feasibility, efficacy, and safety of EUS-guided fine-needle biopsy (EUS-FNB) with the new 20G needle in diagnosing subepithelial lesions (SELs).
UNASSIGNED: Retrospectively collected data from consecutive patients with SELs undergoing EUS-FNB with the 20G needle at five centers were analyzed.
UNASSIGNED: A total of 50 SELs were included. The mean lesion size was 43.1 ± 17.5 mm. The lesion locations were esophagus (n = 1), stomach (n = 37), distal duodenum (n = 5), rectum (n = 6), and colon (n = 1). The procedure was technically feasible in all patients. Definitive diagnosis with full histological assessment including immunohistochemistry was obtained in 88% (44/50) of the patients. Considering malignant versus benign lesions, the sensitivity, specificity, positive predictive value, and negative predictive value were 85% (95% confidence interval [CI] 70.2-94.3), 100% (95% CI 58.7%-100%), 100% (95% CI 85.1%-100%), and 62.5 (95% CI 27.7-84.8), respectively. No major complications requiring additional care have been observed.
UNASSIGNED: In this multicenter study, we found that EUS-FNB with the new 20G core needle is an effective and safe method for the diagnosis of SELs with a high rate of producing adequate histological material and high diagnostic accuracy even from difficult-to-approach anatomical locations.

OBJECTIVE: To describe the anatomical location, size, tumour characteristics and morphology on CT of gastric lymphoepithelioma-like carcinoma (LELC) in order to determine the proportion of lesions that present as submucosal masses, and to review the clinicopathological findings.
METHODS: This retrospective study reviewed CT images of 186 lesions from 178 patients with LELC. CT morphologies and other findings were also analyzed. Pathology and medical records were reviewed. A pathology slide review of the lesions that presented with submucosal masses was performed.
RESULTS: Gastric LELC presenting as a submucosal mass was found in 9.1 %. The most common CT morphology was eccentric wall thickening (67.7 %). On the pathology review, 14/17 submucosal mass lesions (82.4 %) had a central ulceration. 105 lesions were T1/T2 stage (94.1 %), and N0 stage was diagnosed in 66.1 %. Fifty-six of 63 metastatic lymph nodes (LNs) (88.9 %) demonstrated homogeneous enhancement, regardless of size. Male predominance (85.4 %), upper stomach location (45.7 %) and multiplicity (4.5 %) were found.
CONCLUSIONS: Gastric LELC presenting as a submucosal mass is only detected in a small portion of all patients, and the most common finding is eccentric wall thickening. Central ulceration and enlarged LNs with homogeneous enhancement are occasionally other features on CT.
CONCLUSIONS: • LELCs as submucosal masses on CT were detected in only 9.1 %. • The most common CT finding was eccentric wall thickening (67.7 %). • Central ulceration and enlarged LNs with homogeneous enhancement might be seen.

Submucosal lesions are mass-like protuberances into the gastrointestinal lumen covered by normal mucosa. Making a definitive diagnosis is difficult because of the number of benign and malignant lesions and extrinsic compression. Here we report the case of a 42-year-old woman referred for colon polypectomy. Colonoscopy revealed a polypoid formation with externalization from the appendicular orifice covered by normal mucosa and another formation at the sigmoid colon. The histopathology of both lesions was normal. Endoscopic ultrasound showed a hypoechoic lesion that was slightly heterogeneous in the fourth layer, and CT colonography confirmed the findings. Surgical therapy with ileocolic resection and resection of the sigmoid lesion was performed. Surgical specimens revealed an appendicular intussusception by endometriosis and endometrial foci in the sigmoid. Intestinal endometriosis may have several presentations, but it should always be considered in the differential diagnosis of a submucosal lesion in the colon.