Ior basal segment of left decrease lobe sub pleural in location [Table/Fig-1]. This HRCT was carried out when she was menstruating. On detailed clinical history the haemoptysis occurred through menstruation period with weakness and weight reduction. Cough with expectoration of blood reoccurred just about every menstruation period lasting for couple of days. Total level of blood expectorated as per patient’ s version was around 20-30 ml. She had history two regular vaginal deliveries and dilatation and curettage one year back for missed abortion. She gave no history of endometriosis. Ultrasonography of pelvis was regular. A repeat CT was accomplished right after control of haemoptysis and in the course of non-menstruating period after 16 days of first CT. It showed full resolution from the lesions [Table/ Fig-2]. A diagnosis of thoracic endometriosis with catemenial haemoptysis was produced. Bronchoscopy revealed hyperemic areasin left apicoposterior bronchus upper lobe and in appropriate upper lobe apical segment bronchus. Bronchial washing was taken. Bronchial washing turned to become negative. Patient was place on tab Danazol 200 mg BD health-related therapy, to which she responded properly and suffered only a single a lot more minimal bout of haemoptysis. Monthly follow up visits had been uneventful. Medication was discontinued following 4 months. After 8 months stick to up the patient is clinically standard and had no fresh episodes of haemoptysis.Nectin-4, Human (HEK293, His) DisCussionThoracic endometriosis is characterized by proliferation of an ectopic endometrium in lung, pleura and tracheobronchial tree and its shedding throughout menstrual period resulting in catemenial haemoptysis [1].AXL, Human (449a.a, HEK293, His) The incidence rate of endometriosis in women of reproductive age group is around 5-10 plus the incidence of thoracic endometriosis is even rarer [2]. Bronchopulmonary endometriosis was initially documented by Hart in1912 [3]. A number of theories have already been postulated for pathogenesis of further pelvic endometriosis. The two well-liked theories are micro embolization theory and peritoneal-pleural migration. In each theories the endometrial tissue is transported from pelvis to lung via the lymphatic/vascular channels or metastatic implantation by retrograde travel on the endometrial tissue from the fallopian tubes to peritoneum and from there to thorax through defects inside the diaphragm [4].PMID:25040798 Thoracic endometriotic tissue may perhaps be situated in the tracheo-bronchial tree, pulmonary tissue, pleura or diaphragm [5] as well as the presentation could differ accordingly. Majority in the sufferers (73 ) present with catemenial pneumothorax. Though other individuals present with catemenial haemothorax (14 ). Catemenial haemoptysis has been reported in 7 from the cases. six of your circumstances present with chest discomfort and lung nodules [6]. History of repeated haemoptysis through menstruation followed by symptomless intervening period as revealed in our patient is characteristic and diagnostic of thoracic endometriosis. HRCT thorax is non-specific and may possibly reveal ground glass or welldefined opacities, nodular lesions and thin-wall cavities [7] but it would be the modality of decision for localization of endometrial deposits in the lung and pleura. Within the presence of characteristic history and clinical examination, findings HRCT are regarded diagnostic of pulmonary endometriosis [8]. Pleural lesions are often rightsided, whereas lung lesions can be on either side [2]. This is explained by the fact that the lymphatic drainage is a lot more extensive[table/Fig-1a,b]: Sagittal and axial view showing subtle ground glass opacity in posterior.