MCQsOnline - Online Collection of MCQs of Medical PG Entrance Exams.

MCQ stands for Multiple Choice Questions sometimes called as Objective type questions. Here we discuss the Old Question Papers, High Yield Points and Strategies with respect to the Indian Medical Post Graduate PG Entrance Exams like AIIMS,AIPG, JIPMER, CMC Vellore, PGI Chandigarh, UPSC, TNPSC, State PG Exams like Tamil Nadu PG (TN PG), Delhi PG, UPPG, Tamilnadu PG (TNPG), Karnataka PG, MAHE, COMED-K etc.

Target PG

PG Preparation

Related Portals

Search This Site

If you cannot locate what you want to find, please search using the box given below

Wednesday, January 07, 2009

Thymoma commonly presents with Myasthenia Gravis

Question 89
Thymoma commonly presents with
a.       Myasthenia Gravis
b.      ??
c.       ??
d.       ??
a. Myasthenia Gravis
Harrison 16th Edition Page
Most Books
Myasthenia gravis (MG) is an acquired autoimmune disorder characterized clinically by weakness of skeletal muscles and fatigability on exertion. Thomas Willis reported the first clinical description in 1672.
The antibodies in MG are directed toward the acetylcholine receptor (AChR) at the neuromuscular junction (NMJ) of skeletal muscles.
The exact mechanism of loss of immunologic tolerance to AChR, a self antigen, is not understood. MG can be considered a B cell–mediated disease, as antibodies (a B cell product) against AChR are responsible for the disease. However, the importance of T cells in pathogenesis of MG is becoming increasingly apparent. The thymus is the central organ in T cell–mediated immunity, and thymic abnormalities such as thymic hyperplasia or thymoma are well recognized in myasthenic patients.
Since this question is often repeated, every one attempted it in a jiffy that they could not even recollect the other choices afterwards
Ä     MG is idiopathic in most patients.
Ä     Penicillamine is known to induce various autoimmune disorders, including MG.

1 comment:

  1. Bisul merupakan salah satu jenis penyakit pada kulit yang disebabkan baik oleh infeksi, peradangan dan bisa terjadi dibagian tubuh mana saja termasuk payudara.
    Cara Mengobati Bisul di Payudara Kiri dan Kanan