Multilocular thymic cyst (MTC) and other tumors with MTC features: Pitfalls in diagnosis.

Published on Jun 11, 2021in Seminars in Diagnostic Pathology2.511
· DOI :10.1053/J.SEMDP.2021.06.004
Diana M. Oramas1
Estimated H-index: 1
(University of Texas MD Anderson Cancer Center),
Cesar A. Moran76
Estimated H-index: 76
(University of Texas MD Anderson Cancer Center)
Sources
Abstract
ABSTRACT null null Cystic lesions of the anterior mediastinum represent a well-known group of benign lesions that are relatively common in the general practice, namely in the pediatric age group. In the adult population, multilocular thymic cyst (MTC) plays an important role in occurrence as it presents as a cystic anterior mediastinal mass that clinically may mimic another anterior mediastinal tumor. In general, MTC is of rather unusual occurrence and its histopathological features have been well described in the literature. However, similar histopathological features may also be associated with a gamut of other tumoral conditions that although unrelated may be encountered growing along the walls of these cystic structures. Herein a presentation of the classical MTC and the classical histopathological features of such entity in association with other tumoral conditions will be discussed. It is highly important to underscore that the final interpretation of some of these tumors is based on a thorough evaluation of the cystic lesion and a reasonable sampling for histological evaluation so that the proper interpretation can be reached. Needless to say, the radiological and clinical information of the patients with cystic anterior mediastinal lesions is very important in the final analysis of these cases.
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#1Diana M. Oramas (University of Texas MD Anderson Cancer Center)H-Index: 1
#2Cesar A. Moran (University of Texas MD Anderson Cancer Center)H-Index: 76
Twenty-five cases of micronodular thymomas with prominent cystic changes are presented. The patients are 13 men and 12 women between the ages of 38 and 69 years. Clinically, the majority of patients presented with nonspecific symptoms of cough, chest pain, and dyspnea. Four patients were asymptomatic. Diagnostic imaging showed the presence of an anterior mediastinal mass and surgical resection of the tumor mass was performed in all the patients. Histologically, all the tumors were characterized ...
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#1Neda Kalhor (University of Texas MD Anderson Cancer Center)H-Index: 36
#2Cesar A. Moran (University of Texas MD Anderson Cancer Center)H-Index: 76
Summary Sixteen cases of primary thymic adenocarcinoma are presented. The patients are 9 men and 7 women between the ages of 22 and 68 years (average, 45 years) who presented with non-specific symptoms including cough, chest pain, and dyspnea. Diagnostic imaging revealed the presence of an anterior mediastinal mass, which was surgically removed in all of the patients. Histologically, none of the tumors was encapsulated and showed different growth patterns including mucinous, non-mucinous, and pa...
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#1Sergio Pina-Oviedo (University of Texas MD Anderson Cancer Center)H-Index: 15
#2Cesar A. MoranH-Index: 76
Primary mediastinal Classical Hodgkin lymphoma (CHL) is rare. Nodular sclerosis CHL (NS-CHL) is the most common subtype involving the anterior mediastinum and/or mediastinal lymph nodes. Primary thymic CHL is exceedingly rare. The disease typically affects young women and is asymptomatic in 30% to 5
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#1Annikka Weissferdt (University of Texas MD Anderson Cancer Center)H-Index: 21
#2Neda Kalhor (University of Texas MD Anderson Cancer Center)H-Index: 36
Last. Cesar A. Moran (University of Texas MD Anderson Cancer Center)H-Index: 76
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Aims To present six cases of cystic well-differentiated squamous cell carcinoma of the thymus. Methods and results The patients were six men aged between 48 and 75 years (average: 61.5 years) who were symptomatic with chest pain, shortness of breath, and dyspnoea. Diagnostic imaging showed anterior mediastinal masses, and surgical resection was accomplished in all cases. Grossly, the tumours measured 40–90 mm in greatest diameter (average: 65 mm), and were described as ill-defined lesions with a...
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We present 7 cases of thymic carcinoma associated with a multilocular thymic cyst (MTC). The patients were 5 men and 2 women aged 22 to 71 years (mean, 49.3 y). Clinically, 6 patients presented with chest, sternal, or upper extremity pain, and in 1 patient the tumor was an incidental finding. Grossly, 4 tumors were described as multilobulated solid-cystic masses, whereas 3 cases were described as solid tumors with a white-yellow cut surface and areas of hemorrhage and necrosis. The tumor size ra...
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